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Finding the Fourth Proportional to 64,463.62, 88,961.34 and 36,171.40

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Solution

The fourth proportional to 64,463.62, 88,961.34 and 36,171.40 is: 49,917.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,463.62 : 88,961.34 = 36,171.40 : x
  2. Step 2: Convert to fraction form
    64,463.62/88,961.34 = 36,171.40/x
  3. Step 3: Cross multiply
    64,463.62x = 88,961.34 × 36,171.40
  4. Step 4: Simplify right side
    64,463.62x = 3,217,856,366.42
  5. Step 5: Solve for x
    x = 3,217,856,366.42/64,463.62
  6. Step 6: Final answer
    x = 49,917.40

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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.