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Finding the Fourth Proportional to 92,369.28, 138,327.12 and 58,990.80

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Solution

The fourth proportional to 92,369.28, 138,327.12 and 58,990.80 is: 88,341.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,369.28 : 138,327.12 = 58,990.80 : x
  2. Step 2: Convert to fraction form
    92,369.28/138,327.12 = 58,990.80/x
  3. Step 3: Cross multiply
    92,369.28x = 138,327.12 × 58,990.80
  4. Step 4: Simplify right side
    92,369.28x = 8,160,027,470.50
  5. Step 5: Solve for x
    x = 8,160,027,470.50/92,369.28
  6. Step 6: Final answer
    x = 88,341.36

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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.