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Finding the Fourth Proportional to 443,561,906.60, 665,342,859.90 and 328,770,650.60

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Solution

The fourth proportional to 443,561,906.60, 665,342,859.90 and 328,770,650.60 is: 493,155,975.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,561,906.60 : 665,342,859.90 = 328,770,650.60 : x
  2. Step 2: Convert to fraction form
    443,561,906.60/665,342,859.90 = 328,770,650.60/x
  3. Step 3: Cross multiply
    443,561,906.60x = 665,342,859.90 × 328,770,650.60
  4. Step 4: Simplify right side
    443,561,906.60x = 218,745,204,921,387,648
  5. Step 5: Solve for x
    x = 218,745,204,921,387,648/443,561,906.60
  6. Step 6: Final answer
    x = 493,155,975.90

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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.