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Finding the Fourth Proportional to 168.44, 232.45 and 113.09

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Solution

The fourth proportional to 168.44, 232.45 and 113.09 is: 156.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    168.44 : 232.45 = 113.09 : x
  2. Step 2: Convert to fraction form
    168.44/232.45 = 113.09/x
  3. Step 3: Cross multiply
    168.44x = 232.45 × 113.09
  4. Step 4: Simplify right side
    168.44x = 26,287.21
  5. Step 5: Solve for x
    x = 26,287.21/168.44
  6. Step 6: Final answer
    x = 156.06

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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.