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Finding the Fourth Proportional to 48,778.80, 73,168.20 and 43,141.20

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Solution

The fourth proportional to 48,778.80, 73,168.20 and 43,141.20 is: 64,711.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,778.80 : 73,168.20 = 43,141.20 : x
  2. Step 2: Convert to fraction form
    48,778.80/73,168.20 = 43,141.20/x
  3. Step 3: Cross multiply
    48,778.80x = 73,168.20 × 43,141.20
  4. Step 4: Simplify right side
    48,778.80x = 3,156,563,949.84
  5. Step 5: Solve for x
    x = 3,156,563,949.84/48,778.80
  6. Step 6: Final answer
    x = 64,711.80

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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.