Final answer:
Steve needs to add 5.5 gallons of pool chemical to his 55,000-gallon pool, as determined by a simple proportion based on the ratio provided for pool chemical use.
Step-by-step explanation:
To determine how many gallons of pool chemicals Steve needs to add to his 55,000-gallon pool, we use a simple proportion method. According to the instructions, 1 gallon of pool chemical is needed for every 10,000 gallons of pool water. Therefore, we can set up a proportion where x gallons of chemical will be needed for 55,000 gallons of pool water:
1 gallon / 10,000 gallons = x gallons / 55,000 gallons
Multiplying both sides by 55,000, we get:
x = (55,000 gallons × 1 gallon) / 10,000 gallons
x = 55 gallons / 10
x = 5.5 gallons
So, Steve will need to add 5.5 gallons of pool chemical to his 55,000-gallon pool.