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Finding the Fourth Proportional to 123,641.31, 170,625.11 and 67,052.69

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Solution

The fourth proportional to 123,641.31, 170,625.11 and 67,052.69 is: 92,532.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,641.31 : 170,625.11 = 67,052.69 : x
  2. Step 2: Convert to fraction form
    123,641.31/170,625.11 = 67,052.69/x
  3. Step 3: Cross multiply
    123,641.31x = 170,625.11 × 67,052.69
  4. Step 4: Simplify right side
    123,641.31x = 11,440,872,607.05
  5. Step 5: Solve for x
    x = 11,440,872,607.05/123,641.31
  6. Step 6: Final answer
    x = 92,532.77

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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.