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Finding the Fourth Proportional to 63,612.61, 87,640.99 and 49,222.96

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Solution

The fourth proportional to 63,612.61, 87,640.99 and 49,222.96 is: 67,815.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,612.61 : 87,640.99 = 49,222.96 : x
  2. Step 2: Convert to fraction form
    63,612.61/87,640.99 = 49,222.96/x
  3. Step 3: Cross multiply
    63,612.61x = 87,640.99 × 49,222.96
  4. Step 4: Simplify right side
    63,612.61x = 4,313,948,945.13
  5. Step 5: Solve for x
    x = 4,313,948,945.13/63,612.61
  6. Step 6: Final answer
    x = 67,815.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.