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Finding the Fourth Proportional to 71,691.51, 106,932.27 and 62,257.35

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Solution

The fourth proportional to 71,691.51, 106,932.27 and 62,257.35 is: 92,860.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,691.51 : 106,932.27 = 62,257.35 : x
  2. Step 2: Convert to fraction form
    71,691.51/106,932.27 = 62,257.35/x
  3. Step 3: Cross multiply
    71,691.51x = 106,932.27 × 62,257.35
  4. Step 4: Simplify right side
    71,691.51x = 6,657,319,759.68
  5. Step 5: Solve for x
    x = 6,657,319,759.68/71,691.51
  6. Step 6: Final answer
    x = 92,860.64

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.