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Finding the Fourth Proportional to 123,901.92, 170,974.02 and 68,713.01

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Solution

The fourth proportional to 123,901.92, 170,974.02 and 68,713.01 is: 94,818.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,901.92 : 170,974.02 = 68,713.01 : x
  2. Step 2: Convert to fraction form
    123,901.92/170,974.02 = 68,713.01/x
  3. Step 3: Cross multiply
    123,901.92x = 170,974.02 × 68,713.01
  4. Step 4: Simplify right side
    123,901.92x = 11,748,138,691.13
  5. Step 5: Solve for x
    x = 11,748,138,691.13/123,901.92
  6. Step 6: Final answer
    x = 94,818.05

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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.