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Finding the Fourth Proportional to 275,240.80, 412,861.20 and 88,271.20

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Solution

The fourth proportional to 275,240.80, 412,861.20 and 88,271.20 is: 132,406.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,240.80 : 412,861.20 = 88,271.20 : x
  2. Step 2: Convert to fraction form
    275,240.80/412,861.20 = 88,271.20/x
  3. Step 3: Cross multiply
    275,240.80x = 412,861.20 × 88,271.20
  4. Step 4: Simplify right side
    275,240.80x = 36,443,753,557.44
  5. Step 5: Solve for x
    x = 36,443,753,557.44/275,240.80
  6. Step 6: Final answer
    x = 132,406.80

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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.