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Finding the Fourth Proportional to 392,515.80, 588,773.70 and 363,647.40

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Solution

The fourth proportional to 392,515.80, 588,773.70 and 363,647.40 is: 545,471.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,515.80 : 588,773.70 = 363,647.40 : x
  2. Step 2: Convert to fraction form
    392,515.80/588,773.70 = 363,647.40/x
  3. Step 3: Cross multiply
    392,515.80x = 588,773.70 × 363,647.40
  4. Step 4: Simplify right side
    392,515.80x = 214,106,025,193.38
  5. Step 5: Solve for x
    x = 214,106,025,193.38/392,515.80
  6. Step 6: Final answer
    x = 545,471.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.