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Finding the Fourth Proportional to 73,911.20, 110,845.20 and 26,520.80

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Solution

The fourth proportional to 73,911.20, 110,845.20 and 26,520.80 is: 39,773.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,911.20 : 110,845.20 = 26,520.80 : x
  2. Step 2: Convert to fraction form
    73,911.20/110,845.20 = 26,520.80/x
  3. Step 3: Cross multiply
    73,911.20x = 110,845.20 × 26,520.80
  4. Step 4: Simplify right side
    73,911.20x = 2,939,703,380.16
  5. Step 5: Solve for x
    x = 2,939,703,380.16/73,911.20
  6. Step 6: Final answer
    x = 39,773.45

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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.