PLEASE HELP: Write the equation/proportion used to solve for the indicated missing length, the work solving the equation, and the solution or measure of the missing length.

All about the same size in the city the game was

the law of definite proportions states samples of a compound will always contain the same proportion of elements by mass. in other words, a given compound will always contain the same elements in the same proportions by mass.the law of multiple proportions states when two elements combine with each other to form more than one compound, then the weights of one element that combine with a fixed weight of the other are in a ratio of small whole numbers.

The coefficient, 5 represents the length in relation to the problem.