Assuming you want the "09" to repeat indefinitely, here is how you calculate that:Call your number "x", and write the equation:
(Equation 1) x = 1.09090909...
Multiply by 100 (that's two zeros, because it's two digits that repeat):
(Equation 2) 100x = 109.09090909...
Subtract equation (1) from equation (2):
99x = 108
Solve for "x" (as a fraction), and simplify.
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0.45714285814 is a fraction. It is a fraction in decimal form rather than in the form of a ratio. However, that does not stop it being a fraction. Its equivalent, in rational form, is 45714285714/100000000000.
12.6375 is a fraction. It is a fraction in decimal form rather than in the form of a ratio. However, that does not stop it being a fraction. Its equivalent, in rational form, is 126375/10000. You can simplify this rational fraction if required.
0.19 is a fraction. It is a fraction in decimal form rather than in the form of a ratio. However, that does not stop it being a fraction. And, since it is a decimal fraction, there is not another simpler decimal form. Its equivalent, in rational form, is 19/100 which cannot be simplified.
-0.992857143 in fraction form = -992857143/1000000000
The fraction form of 0.18 is 9/50.