What is 13.30769076907690769... as a Fraction?

13.30769 equals 66531849995 as a fraction.

How do you turn 13.30769 repeating into a fraction?

Detailed Answer:

Step 1: To convert 13.30769 repeating into a fraction, begin writing this simple equation:

n = 13.30769 (equation 1)

Step 2: Notice that there are 4 digits in the repeating block (0769) and 1 digit in the non-repeating part (3). Multiply both sides by 10⁵ = 100000.

100000 × n = 1330769.0769 (equation 2)

Step 3: Now subtract equation 1 from equation 2 to cancel the repeating block (or repetend) out.

100000 × n = 1330769.0769
    10 × n = 13.30769
 99990 × n = 1330636

133063699990 could be the answer, but it still can be put in the simplest form, i.e., reduced.

To simplify this fraction, divide the numerator and denominator by 2 (the GCF - greatest common factor).

n = 133063699990 = 1330636 ÷ 299990 ÷ 2 = 66531849995. So,

13.30769 = 66531849995 as the lowest possible fraction.

As the numerator is greater than the denominator, we have an improper fraction, so we can also express it as a mixed number, thus 66531849995 is also equal to 131538349995 when expressed as a mixed number.

The repeating decimal 13.30769 (vinculum notation) has a repeated block length of 4. It is also represented as 13.3076907690769... (ellipsis notation) which equals approximately 13.307690769076907690769 (decimal approximation)(*).

The recurring decimal 13.30769 can be written as a ratio of two integers having 665318 as the numerator and 49995 as the denominator. So, it is a rational number (named after ratio). It can be shown that a number is rational if its decimal representation is repeating or terminating.

(*) At present, there is no single universally accepted notation or phrasing for repeating decimals.