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Finding the Fourth Proportional to 274,791.33, 412,246.11 and 85,247.88

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Solution

The fourth proportional to 274,791.33, 412,246.11 and 85,247.88 is: 127,890.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    274,791.33 : 412,246.11 = 85,247.88 : x
  2. Step 2: Convert to fraction form
    274,791.33/412,246.11 = 85,247.88/x
  3. Step 3: Cross multiply
    274,791.33x = 412,246.11 × 85,247.88
  4. Step 4: Simplify right side
    274,791.33x = 35,143,106,915.75
  5. Step 5: Solve for x
    x = 35,143,106,915.75/274,791.33
  6. Step 6: Final answer
    x = 127,890.16

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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.