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Finding the Fourth Proportional to 82,664.70, 123,960.60 and 32,728.20

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Solution

The fourth proportional to 82,664.70, 123,960.60 and 32,728.20 is: 49,077.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,664.70 : 123,960.60 = 32,728.20 : x
  2. Step 2: Convert to fraction form
    82,664.70/123,960.60 = 32,728.20/x
  3. Step 3: Cross multiply
    82,664.70x = 123,960.60 × 32,728.20
  4. Step 4: Simplify right side
    82,664.70x = 4,057,007,308.92
  5. Step 5: Solve for x
    x = 4,057,007,308.92/82,664.70
  6. Step 6: Final answer
    x = 49,077.87

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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.