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Finding the Fourth Proportional to 424,475.28, 636,493.82 and 124,916.96

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Solution

The fourth proportional to 424,475.28, 636,493.82 and 124,916.96 is: 187,310.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    424,475.28 : 636,493.82 = 124,916.96 : x
  2. Step 2: Convert to fraction form
    424,475.28/636,493.82 = 124,916.96/x
  3. Step 3: Cross multiply
    424,475.28x = 636,493.82 × 124,916.96
  4. Step 4: Simplify right side
    424,475.28x = 79,508,874,019.84
  5. Step 5: Solve for x
    x = 79,508,874,019.84/424,475.28
  6. Step 6: Final answer
    x = 187,310.96

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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.