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Finding the Fourth Proportional to 123,640.74, 170,624.31 and 67,052.12

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Solution

The fourth proportional to 123,640.74, 170,624.31 and 67,052.12 is: 92,531.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,640.74 : 170,624.31 = 67,052.12 : x
  2. Step 2: Convert to fraction form
    123,640.74/170,624.31 = 67,052.12/x
  3. Step 3: Cross multiply
    123,640.74x = 170,624.31 × 67,052.12
  4. Step 4: Simplify right side
    123,640.74x = 11,440,720,855.92
  5. Step 5: Solve for x
    x = 11,440,720,855.92/123,640.74
  6. Step 6: Final answer
    x = 92,531.97

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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.