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Finding the Fourth Proportional to 443,523.10, 665,138.85 and 163,003.90

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Solution

The fourth proportional to 443,523.10, 665,138.85 and 163,003.90 is: 244,452.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,523.10 : 665,138.85 = 163,003.90 : x
  2. Step 2: Convert to fraction form
    443,523.10/665,138.85 = 163,003.90/x
  3. Step 3: Cross multiply
    443,523.10x = 665,138.85 × 163,003.90
  4. Step 4: Simplify right side
    443,523.10x = 108,420,226,591.52
  5. Step 5: Solve for x
    x = 108,420,226,591.52/443,523.10
  6. Step 6: Final answer
    x = 244,452.27

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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.