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Finding the Fourth Proportional to 123,760.54, 170,789.70 and 67,171.93

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Solution

The fourth proportional to 123,760.54, 170,789.70 and 67,171.93 is: 92,697.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,760.54 : 170,789.70 = 67,171.93 : x
  2. Step 2: Convert to fraction form
    123,760.54/170,789.70 = 67,171.93/x
  3. Step 3: Cross multiply
    123,760.54x = 170,789.70 × 67,171.93
  4. Step 4: Simplify right side
    123,760.54x = 11,472,273,773.12
  5. Step 5: Solve for x
    x = 11,472,273,773.12/123,760.54
  6. Step 6: Final answer
    x = 92,697.35

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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.