You do nothing, because 4.5 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 rational equivalent is 45/10 which can be simplified if required.
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Any whole number can become a fraction by putting it over 1.
Any percentage can become a fraction by putting it over 100.
It is 45/360, which can be simplified, if required.
The number 45 is the same as 45/1, therefore you can change 45 to a fraction of 45/1.
45 is an integer, not a fraction.
45 percent as a fraction is 45/100 or 9/20. 45 percent as a decimal is 0.45.
how do you turn 10% into a fraction