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Finding the Fourth Proportional to 185,593.80, 278,390.70 and 92,281.80

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Solution

The fourth proportional to 185,593.80, 278,390.70 and 92,281.80 is: 138,422.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,593.80 : 278,390.70 = 92,281.80 : x
  2. Step 2: Convert to fraction form
    185,593.80/278,390.70 = 92,281.80/x
  3. Step 3: Cross multiply
    185,593.80x = 278,390.70 × 92,281.80
  4. Step 4: Simplify right side
    185,593.80x = 25,690,394,899.26
  5. Step 5: Solve for x
    x = 25,690,394,899.26/185,593.80
  6. Step 6: Final answer
    x = 138,422.70

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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.