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Finding the Fourth Proportional to 351,892.25, 485,607.96 and 196,841.85

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Solution

The fourth proportional to 351,892.25, 485,607.96 and 196,841.85 is: 271,639.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,892.25 : 485,607.96 = 196,841.85 : x
  2. Step 2: Convert to fraction form
    351,892.25/485,607.96 = 196,841.85/x
  3. Step 3: Cross multiply
    351,892.25x = 485,607.96 × 196,841.85
  4. Step 4: Simplify right side
    351,892.25x = 95,587,967,400.10
  5. Step 5: Solve for x
    x = 95,587,967,400.10/351,892.25
  6. Step 6: Final answer
    x = 271,639.88

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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.