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Finding the Fourth Proportional to 279,439.56, 419,211.18 and 92,452.68

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Solution

The fourth proportional to 279,439.56, 419,211.18 and 92,452.68 is: 138,696.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,439.56 : 419,211.18 = 92,452.68 : x
  2. Step 2: Convert to fraction form
    279,439.56/419,211.18 = 92,452.68/x
  3. Step 3: Cross multiply
    279,439.56x = 419,211.18 × 92,452.68
  4. Step 4: Simplify right side
    279,439.56x = 38,757,197,076.96
  5. Step 5: Solve for x
    x = 38,757,197,076.96/279,439.56
  6. Step 6: Final answer
    x = 138,696.17

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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.