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Finding the Fourth Proportional to 323,721,003.20, 485,581,504.80 and 323,721,003.20

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Solution

The fourth proportional to 323,721,003.20, 485,581,504.80 and 323,721,003.20 is: 485,581,504.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,721,003.20 : 485,581,504.80 = 323,721,003.20 : x
  2. Step 2: Convert to fraction form
    323,721,003.20/485,581,504.80 = 323,721,003.20/x
  3. Step 3: Cross multiply
    323,721,003.20x = 485,581,504.80 × 323,721,003.20
  4. Step 4: Simplify right side
    323,721,003.20x = 157,192,931,869,221,600
  5. Step 5: Solve for x
    x = 157,192,931,869,221,600/323,721,003.20
  6. Step 6: Final answer
    x = 485,581,504.80

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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.