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Finding the Fourth Proportional to 167.88, 231.60 and 118.92

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Solution

The fourth proportional to 167.88, 231.60 and 118.92 is: 164.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    167.88 : 231.60 = 118.92 : x
  2. Step 2: Convert to fraction form
    167.88/231.60 = 118.92/x
  3. Step 3: Cross multiply
    167.88x = 231.60 × 118.92
  4. Step 4: Simplify right side
    167.88x = 27,541.87
  5. Step 5: Solve for x
    x = 27,541.87/167.88
  6. Step 6: Final answer
    x = 164.06

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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.