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Finding the Fourth Proportional to 124,761.68, 172,174.68 and 69,572.28

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Solution

The fourth proportional to 124,761.68, 172,174.68 and 69,572.28 is: 96,011.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,761.68 : 172,174.68 = 69,572.28 : x
  2. Step 2: Convert to fraction form
    124,761.68/172,174.68 = 69,572.28/x
  3. Step 3: Cross multiply
    124,761.68x = 172,174.68 × 69,572.28
  4. Step 4: Simplify right side
    124,761.68x = 11,978,584,238.80
  5. Step 5: Solve for x
    x = 11,978,584,238.80/124,761.68
  6. Step 6: Final answer
    x = 96,011.73

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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.