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Finding the Fourth Proportional to 171,753.32, 236,974.72 and 99,138.44

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Solution

The fourth proportional to 171,753.32, 236,974.72 and 99,138.44 is: 136,785.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,753.32 : 236,974.72 = 99,138.44 : x
  2. Step 2: Convert to fraction form
    171,753.32/236,974.72 = 99,138.44/x
  3. Step 3: Cross multiply
    171,753.32x = 236,974.72 × 99,138.44
  4. Step 4: Simplify right side
    171,753.32x = 23,493,304,060.24
  5. Step 5: Solve for x
    x = 23,493,304,060.24/171,753.32
  6. Step 6: Final answer
    x = 136,785.15

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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.