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Finding the Fourth Proportional to 92,363.78, 138,318.87 and 58,985.30

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Solution

The fourth proportional to 92,363.78, 138,318.87 and 58,985.30 is: 88,333.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,363.78 : 138,318.87 = 58,985.30 : x
  2. Step 2: Convert to fraction form
    92,363.78/138,318.87 = 58,985.30/x
  3. Step 3: Cross multiply
    92,363.78x = 138,318.87 × 58,985.30
  4. Step 4: Simplify right side
    92,363.78x = 8,158,780,042.61
  5. Step 5: Solve for x
    x = 8,158,780,042.61/92,363.78
  6. Step 6: Final answer
    x = 88,333.11

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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.