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Finding the Fourth Proportional to 122,791.87, 169,462.56 and 69,073.66

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Solution

The fourth proportional to 122,791.87, 169,462.56 and 69,073.66 is: 95,327.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,791.87 : 169,462.56 = 69,073.66 : x
  2. Step 2: Convert to fraction form
    122,791.87/169,462.56 = 69,073.66/x
  3. Step 3: Cross multiply
    122,791.87x = 169,462.56 × 69,073.66
  4. Step 4: Simplify right side
    122,791.87x = 11,705,399,252.17
  5. Step 5: Solve for x
    x = 11,705,399,252.17/122,791.87
  6. Step 6: Final answer
    x = 95,327.15

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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.