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Finding the Fourth Proportional to 458,540.80, 686,644.80 and 437,545.60

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Solution

The fourth proportional to 458,540.80, 686,644.80 and 437,545.60 is: 655,205.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,540.80 : 686,644.80 = 437,545.60 : x
  2. Step 2: Convert to fraction form
    458,540.80/686,644.80 = 437,545.60/x
  3. Step 3: Cross multiply
    458,540.80x = 686,644.80 × 437,545.60
  4. Step 4: Simplify right side
    458,540.80x = 300,438,411,002.88
  5. Step 5: Solve for x
    x = 300,438,411,002.88/458,540.80
  6. Step 6: Final answer
    x = 655,205.41

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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.