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Finding the Fourth Proportional to 63,310.32, 87,310.44 and 54,354.96

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Solution

The fourth proportional to 63,310.32, 87,310.44 and 54,354.96 is: 74,960.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    63,310.32 : 87,310.44 = 54,354.96 : x
  2. Step 2: Convert to fraction form
    63,310.32/87,310.44 = 54,354.96/x
  3. Step 3: Cross multiply
    63,310.32x = 87,310.44 × 54,354.96
  4. Step 4: Simplify right side
    63,310.32x = 4,745,755,473.78
  5. Step 5: Solve for x
    x = 4,745,755,473.78/63,310.32
  6. Step 6: Final answer
    x = 74,960.22

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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.