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Finding the Fourth Proportional to 101,691.98, 140,340.09 and 58,655.46

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Solution

The fourth proportional to 101,691.98, 140,340.09 and 58,655.46 is: 80,947.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,691.98 : 140,340.09 = 58,655.46 : x
  2. Step 2: Convert to fraction form
    101,691.98/140,340.09 = 58,655.46/x
  3. Step 3: Cross multiply
    101,691.98x = 140,340.09 × 58,655.46
  4. Step 4: Simplify right side
    101,691.98x = 8,231,712,535.39
  5. Step 5: Solve for x
    x = 8,231,712,535.39/101,691.98
  6. Step 6: Final answer
    x = 80,947.51

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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.