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Finding the Fourth Proportional to 117,662.76, 162,375.87 and 63,947.78

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Solution

The fourth proportional to 117,662.76, 162,375.87 and 63,947.78 is: 88,248.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,662.76 : 162,375.87 = 63,947.78 : x
  2. Step 2: Convert to fraction form
    117,662.76/162,375.87 = 63,947.78/x
  3. Step 3: Cross multiply
    117,662.76x = 162,375.87 × 63,947.78
  4. Step 4: Simplify right side
    117,662.76x = 10,383,575,600.19
  5. Step 5: Solve for x
    x = 10,383,575,600.19/117,662.76
  6. Step 6: Final answer
    x = 88,248.61

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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.