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Finding the Fourth Proportional to 572,553.60, 858,139.20 and 291,926.40

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Solution

The fourth proportional to 572,553.60, 858,139.20 and 291,926.40 is: 437,537.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,553.60 : 858,139.20 = 291,926.40 : x
  2. Step 2: Convert to fraction form
    572,553.60/858,139.20 = 291,926.40/x
  3. Step 3: Cross multiply
    572,553.60x = 858,139.20 × 291,926.40
  4. Step 4: Simplify right side
    572,553.60x = 250,513,487,354.88
  5. Step 5: Solve for x
    x = 250,513,487,354.88/572,553.60
  6. Step 6: Final answer
    x = 437,537.18

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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.