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Finding the Fourth Proportional to 323,828.70, 447,006.60 and 243,489.48

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Solution

The fourth proportional to 323,828.70, 447,006.60 and 243,489.48 is: 336,107.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,828.70 : 447,006.60 = 243,489.48 : x
  2. Step 2: Convert to fraction form
    323,828.70/447,006.60 = 243,489.48/x
  3. Step 3: Cross multiply
    323,828.70x = 447,006.60 × 243,489.48
  4. Step 4: Simplify right side
    323,828.70x = 108,841,404,590.57
  5. Step 5: Solve for x
    x = 108,841,404,590.57/323,828.70
  6. Step 6: Final answer
    x = 336,107.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.