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Finding the Fourth Proportional to 292,042.20, 437,820.30 and 123,691.80

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Solution

The fourth proportional to 292,042.20, 437,820.30 and 123,691.80 is: 185,434.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    292,042.20 : 437,820.30 = 123,691.80 : x
  2. Step 2: Convert to fraction form
    292,042.20/437,820.30 = 123,691.80/x
  3. Step 3: Cross multiply
    292,042.20x = 437,820.30 × 123,691.80
  4. Step 4: Simplify right side
    292,042.20x = 54,154,780,983.54
  5. Step 5: Solve for x
    x = 54,154,780,983.54/292,042.20
  6. Step 6: Final answer
    x = 185,434.78

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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.