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Finding the Fourth Proportional to 123,902.17, 170,974.39 and 68,713.27

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Solution

The fourth proportional to 123,902.17, 170,974.39 and 68,713.27 is: 94,818.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,902.17 : 170,974.39 = 68,713.27 : x
  2. Step 2: Convert to fraction form
    123,902.17/170,974.39 = 68,713.27/x
  3. Step 3: Cross multiply
    123,902.17x = 170,974.39 × 68,713.27
  4. Step 4: Simplify right side
    123,902.17x = 11,748,209,423.16
  5. Step 5: Solve for x
    x = 11,748,209,423.16/123,902.17
  6. Step 6: Final answer
    x = 94,818.43

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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.