To simplify a ratio with a fraction, eliminate the fraction(s) (by multiplying by the LCD) and then reduce if needed.
Examples:
3/4:2/3 = 9:8 (multiply both by 12)
2 4/7: 1 8/9 = 162:119 (multiply both by 63)
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This depends on the context. However, it is good practice to reduce a ratio or a fraction to its lowest possible term. The only time you wouldn't simplify a ratio or fraction is if it signified something in its original state.
3.6 = 36/10. You can simplify that ratio if you like.
17.6 : 10. 4 - Multiply by 10 to remove the figures after the decimal point. 176 : 104 - Divide by 8 to simplify. 22 : 13 A ratio can be expressed as a fraction. (e.g. 22/13) When simplifying a ratio, perform the same procedures as when simplifying a fraction to create an equivalent fraction.
95.5 is itself 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 955/10. You can simplify that ratio if you so wish.
0.167 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 167/1000. You cannot simplify this fraction.