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Finding the Fourth Proportional to 82,916.60, 124,350.60 and 38,532.65

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Solution

The fourth proportional to 82,916.60, 124,350.60 and 38,532.65 is: 57,787.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,916.60 : 124,350.60 = 38,532.65 : x
  2. Step 2: Convert to fraction form
    82,916.60/124,350.60 = 38,532.65/x
  3. Step 3: Cross multiply
    82,916.60x = 124,350.60 × 38,532.65
  4. Step 4: Simplify right side
    82,916.60x = 4,791,558,147.09
  5. Step 5: Solve for x
    x = 4,791,558,147.09/82,916.60
  6. Step 6: Final answer
    x = 57,787.68

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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.