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Finding the Fourth Proportional to 351,593.43, 485,164.17 and 196,515.69

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Solution

The fourth proportional to 351,593.43, 485,164.17 and 196,515.69 is: 271,172.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,593.43 : 485,164.17 = 196,515.69 : x
  2. Step 2: Convert to fraction form
    351,593.43/485,164.17 = 196,515.69/x
  3. Step 3: Cross multiply
    351,593.43x = 485,164.17 × 196,515.69
  4. Step 4: Simplify right side
    351,593.43x = 95,342,371,630.83
  5. Step 5: Solve for x
    x = 95,342,371,630.83/351,593.43
  6. Step 6: Final answer
    x = 271,172.22

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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.