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Proportions are represented as one number divided by another; written as "a to b" or "a:b".
 False
 Ratios are represented as one number divided by another number.

Ratios are often set up as a decimal.
False

Ratios are represented by one number multiplied by another number.
False

Epinephrine 1:1000 means 1000 parts of epinephrine in 1 part of solution.
 False
 EpiPen contains an epinephrine solution at 1:1000 ratio which means 1 part epinephrine in 1000 parts of the solution.

Proportions determine how two ratios are equal to each other, usually expressed as:
a/b = c/d or a:b = c:d
True

The unknown term will be the same for every ratio and proportion calculation.
False

The units on each side of the proportion equation must be kept in the same order.
True

Two of the four terms in a proportion equation must be known.
 False
 Three of the four terms must be known.

