What is 1.17571571571... as a Fraction?

1.17571 equals 5872749950 as a fraction.

How do you turn 1.17571 repeating into a fraction?

Detailed Answer:

Step 1: To convert 1.17571 repeating into a fraction, begin writing this simple equation:

n = 1.17571 (equation 1)

Step 2: Notice that there are 3 digits in the repeating block (571) and 2 digits in the non-repeating part (17). Multiply both sides by 10⁵ = 100000.

100000 × n = 117571.571 (equation 2)

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

100000 × n = 117571.571
   100 × n = 1.17571
 99900 × n = 117454

11745499900 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 = 11745499900 = 117454 ÷ 299900 ÷ 2 = 5872749950. So,

1.17571 = 5872749950 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 5872749950 is also equal to 1877749950 when expressed as a mixed number.

The repeating decimal 1.17571 (vinculum notation) has a repeated block length of 3. It is also represented as 1.17571571571... (ellipsis notation) which equals approximately 1.17571571571571571 (decimal approximation)(*).

The recurring decimal 1.17571 can be written as a ratio of two integers having 58727 as the numerator and 49950 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.