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Finding the Fourth Proportional to 542,221.30, 747,600.25 and 439,957.18

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Solution

The fourth proportional to 542,221.30, 747,600.25 and 439,957.18 is: 606,601.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,221.30 : 747,600.25 = 439,957.18 : x
  2. Step 2: Convert to fraction form
    542,221.30/747,600.25 = 439,957.18/x
  3. Step 3: Cross multiply
    542,221.30x = 747,600.25 × 439,957.18
  4. Step 4: Simplify right side
    542,221.30x = 328,912,097,757.30
  5. Step 5: Solve for x
    x = 328,912,097,757.30/542,221.30
  6. Step 6: Final answer
    x = 606,601.21

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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.