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Finding the Fourth Proportional to 167.64, 231.35 and 93.97

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Solution

The fourth proportional to 167.64, 231.35 and 93.97 is: 129.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    167.64 : 231.35 = 93.97 : x
  2. Step 2: Convert to fraction form
    167.64/231.35 = 93.97/x
  3. Step 3: Cross multiply
    167.64x = 231.35 × 93.97
  4. Step 4: Simplify right side
    167.64x = 21,739.96
  5. Step 5: Solve for x
    x = 21,739.96/167.64
  6. Step 6: Final answer
    x = 129.68

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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.