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Finding the Fourth Proportional to 117,660.29, 162,372.46 and 63,945.31

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Solution

The fourth proportional to 117,660.29, 162,372.46 and 63,945.31 is: 88,245.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,660.29 : 162,372.46 = 63,945.31 : x
  2. Step 2: Convert to fraction form
    117,660.29/162,372.46 = 63,945.31/x
  3. Step 3: Cross multiply
    117,660.29x = 162,372.46 × 63,945.31
  4. Step 4: Simplify right side
    117,660.29x = 10,382,957,290.16
  5. Step 5: Solve for x
    x = 10,382,957,290.16/117,660.29
  6. Step 6: Final answer
    x = 88,245.21

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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.