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Finding the Fourth Proportional to 323,841.20, 484,984.20 and 261,633.20

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Solution

The fourth proportional to 323,841.20, 484,984.20 and 261,633.20 is: 391,821.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,841.20 : 484,984.20 = 261,633.20 : x
  2. Step 2: Convert to fraction form
    323,841.20/484,984.20 = 261,633.20/x
  3. Step 3: Cross multiply
    323,841.20x = 484,984.20 × 261,633.20
  4. Step 4: Simplify right side
    323,841.20x = 126,887,968,195.44
  5. Step 5: Solve for x
    x = 126,887,968,195.44/323,841.20
  6. Step 6: Final answer
    x = 391,821.57

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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.