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Finding the Fourth Proportional to 62,517.72, 86,314.70 and 55,791.79

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Solution

The fourth proportional to 62,517.72, 86,314.70 and 55,791.79 is: 77,028.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,517.72 : 86,314.70 = 55,791.79 : x
  2. Step 2: Convert to fraction form
    62,517.72/86,314.70 = 55,791.79/x
  3. Step 3: Cross multiply
    62,517.72x = 86,314.70 × 55,791.79
  4. Step 4: Simplify right side
    62,517.72x = 4,815,651,616.31
  5. Step 5: Solve for x
    x = 4,815,651,616.31/62,517.72
  6. Step 6: Final answer
    x = 77,028.59

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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.