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Finding the Fourth Proportional to 220,673.62, 331,138.13 and 92,578.43

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Solution

The fourth proportional to 220,673.62, 331,138.13 and 92,578.43 is: 138,921.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,673.62 : 331,138.13 = 92,578.43 : x
  2. Step 2: Convert to fraction form
    220,673.62/331,138.13 = 92,578.43/x
  3. Step 3: Cross multiply
    220,673.62x = 331,138.13 × 92,578.43
  4. Step 4: Simplify right side
    220,673.62x = 30,656,248,553.49
  5. Step 5: Solve for x
    x = 30,656,248,553.49/220,673.62
  6. Step 6: Final answer
    x = 138,921.22

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.