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Finding the Fourth Proportional to 49,217.70, 73,717.20 and 40,469.70

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Solution

The fourth proportional to 49,217.70, 73,717.20 and 40,469.70 is: 60,614.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,217.70 : 73,717.20 = 40,469.70 : x
  2. Step 2: Convert to fraction form
    49,217.70/73,717.20 = 40,469.70/x
  3. Step 3: Cross multiply
    49,217.70x = 73,717.20 × 40,469.70
  4. Step 4: Simplify right side
    49,217.70x = 2,983,312,968.84
  5. Step 5: Solve for x
    x = 2,983,312,968.84/49,217.70
  6. Step 6: Final answer
    x = 60,614.64

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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.