Finding the Fourth Proportional to 517,218.16, 713,756.36 and 290,858.80
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Solution
The fourth proportional to 517,218.16, 713,756.36 and 290,858.80 is: 401,382.50
Step by Step Solution
- Step 1: Write the proportion equation
517,218.16 : 713,756.36 = 290,858.80 : x - Step 2: Convert to fraction form
517,218.16/713,756.36 = 290,858.80/x - Step 3: Cross multiply
517,218.16x = 713,756.36 × 290,858.80 - Step 4: Simplify right side
517,218.16x = 207,602,318,361.97 - Step 5: Solve for x
x = 207,602,318,361.97/517,218.16 - Step 6: Final answer
x = 401,382.50
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.