Organic milk costs 2 point 5 2 dollars per half gallon. At this rate, how can the price of 4 gallons of organic milk be determined?

A half gallon costs $2.52, and 4 gallons contain 8 half-gallons. Find the price per gallon by multiplying $2.52 by 2, then multiply that unit price by 4 to get the price of 4 gallons. So the price is determined by finding the unit price and multiplying it by 4.

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