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Finding the Fourth Proportional to 178,879.40, 267,876.22 and 131,381.86

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Solution

The fourth proportional to 178,879.40, 267,876.22 and 131,381.86 is: 196,747.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    178,879.40 : 267,876.22 = 131,381.86 : x
  2. Step 2: Convert to fraction form
    178,879.40/267,876.22 = 131,381.86/x
  3. Step 3: Cross multiply
    178,879.40x = 267,876.22 × 131,381.86
  4. Step 4: Simplify right side
    178,879.40x = 35,194,076,033.37
  5. Step 5: Solve for x
    x = 35,194,076,033.37/178,879.40
  6. Step 6: Final answer
    x = 196,747.51

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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.