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Finding the Fourth Proportional to 424,778.67, 637,167.21 and 125,469.43

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Solution

The fourth proportional to 424,778.67, 637,167.21 and 125,469.43 is: 188,203.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,778.67 : 637,167.21 = 125,469.43 : x
  2. Step 2: Convert to fraction form
    424,778.67/637,167.21 = 125,469.43/x
  3. Step 3: Cross multiply
    424,778.67x = 637,167.21 × 125,469.43
  4. Step 4: Simplify right side
    424,778.67x = 79,945,005,295.73
  5. Step 5: Solve for x
    x = 79,945,005,295.73/424,778.67
  6. Step 6: Final answer
    x = 188,203.91

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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.