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Finding the Fourth Proportional to 89,116.70, 133,750.65 and 36,563.90

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Solution

The fourth proportional to 89,116.70, 133,750.65 and 36,563.90 is: 54,876.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,116.70 : 133,750.65 = 36,563.90 : x
  2. Step 2: Convert to fraction form
    89,116.70/133,750.65 = 36,563.90/x
  3. Step 3: Cross multiply
    89,116.70x = 133,750.65 × 36,563.90
  4. Step 4: Simplify right side
    89,116.70x = 4,890,445,391.54
  5. Step 5: Solve for x
    x = 4,890,445,391.54/89,116.70
  6. Step 6: Final answer
    x = 54,876.87

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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.