A: In mathematics, the ratio can be a number smaller than a large number or a number smaller than a large number, depending on the requirements of the topic.

So: Forget the order.

The key is that the result of the final comparison must be the simplest ratio (fractions, decimals and fractions are not the simplest ratios).

Finally, in vitro, the ratio of a:b is equivalent to a÷b and a/b, and finally returns to A: B..

For example, the ratio is 24: 48=24÷48=24/48.

= 1÷2 = 1/2 =0.5

= 1 : 2