A 10 ounce serving of energy drink contains about 190 mg of caffeine approximately how much caffeine

A 10 ounce serving of energy drink contains about 190 mg of caffeine approximately how much caffeine is in a 25 ounce of energy drink?

Set up a proportion of caffeine to ounces where c is the amount of caffeine in a 25 ounce drink:
190/10 = c/25

Type this proportion into the search engine and we get:
c = 475