Express the number as a ratio of integers. 0.61 0.61616161..

To write 0.61 as a ratio of integers, first write it in expanded form.
0.61 as 0.616161.0.61 0.0061 + 0.000061+....
Factoring out 0.61 from each of these terms gives the following.
0.61 = 0.61