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Finding the Fourth Proportional to 397,402.20, 596,103.30 and 262,099.80

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Solution

The fourth proportional to 397,402.20, 596,103.30 and 262,099.80 is: 393,149.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,402.20 : 596,103.30 = 262,099.80 : x
  2. Step 2: Convert to fraction form
    397,402.20/596,103.30 = 262,099.80/x
  3. Step 3: Cross multiply
    397,402.20x = 596,103.30 × 262,099.80
  4. Step 4: Simplify right side
    397,402.20x = 156,238,555,709.34
  5. Step 5: Solve for x
    x = 156,238,555,709.34/397,402.20
  6. Step 6: Final answer
    x = 393,149.70

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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.