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Finding the Fourth Proportional to 252,092.40, 378,065.70 and 92,149.80

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Solution

The fourth proportional to 252,092.40, 378,065.70 and 92,149.80 is: 138,198.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    252,092.40 : 378,065.70 = 92,149.80 : x
  2. Step 2: Convert to fraction form
    252,092.40/378,065.70 = 92,149.80/x
  3. Step 3: Cross multiply
    252,092.40x = 378,065.70 × 92,149.80
  4. Step 4: Simplify right side
    252,092.40x = 34,838,678,641.86
  5. Step 5: Solve for x
    x = 34,838,678,641.86/252,092.40
  6. Step 6: Final answer
    x = 138,198.05

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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.