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Finding the Fourth Proportional to 639,593.92, 882,640.92 and 353,114.56

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Solution

The fourth proportional to 639,593.92, 882,640.92 and 353,114.56 is: 487,298.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,593.92 : 882,640.92 = 353,114.56 : x
  2. Step 2: Convert to fraction form
    639,593.92/882,640.92 = 353,114.56/x
  3. Step 3: Cross multiply
    639,593.92x = 882,640.92 × 353,114.56
  4. Step 4: Simplify right side
    639,593.92x = 311,673,360,103.80
  5. Step 5: Solve for x
    x = 311,673,360,103.80/639,593.92
  6. Step 6: Final answer
    x = 487,298.82

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