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Finding the Fourth Proportional to 80,800.53, 120,905.54 and 47,536.26

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Solution

The fourth proportional to 80,800.53, 120,905.54 and 47,536.26 is: 71,130.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,800.53 : 120,905.54 = 47,536.26 : x
  2. Step 2: Convert to fraction form
    80,800.53/120,905.54 = 47,536.26/x
  3. Step 3: Cross multiply
    80,800.53x = 120,905.54 × 47,536.26
  4. Step 4: Simplify right side
    80,800.53x = 5,747,396,947.20
  5. Step 5: Solve for x
    x = 5,747,396,947.20/80,800.53
  6. Step 6: Final answer
    x = 71,130.68

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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.