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Finding the Fourth Proportional to 385,561.80, 532,268.31 and 242,400.78

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Solution

The fourth proportional to 385,561.80, 532,268.31 and 242,400.78 is: 334,634.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,561.80 : 532,268.31 = 242,400.78 : x
  2. Step 2: Convert to fraction form
    385,561.80/532,268.31 = 242,400.78/x
  3. Step 3: Cross multiply
    385,561.80x = 532,268.31 × 242,400.78
  4. Step 4: Simplify right side
    385,561.80x = 129,022,253,513.28
  5. Step 5: Solve for x
    x = 129,022,253,513.28/385,561.80
  6. Step 6: Final answer
    x = 334,634.43

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.