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Finding the Fourth Proportional to 167.97, 252 and 99.56

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Solution

The fourth proportional to 167.97, 252 and 99.56 is: 149.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    167.97 : 252 = 99.56 : x
  2. Step 2: Convert to fraction form
    167.97/252 = 99.56/x
  3. Step 3: Cross multiply
    167.97x = 252 × 99.56
  4. Step 4: Simplify right side
    167.97x = 25,089.12
  5. Step 5: Solve for x
    x = 25,089.12/167.97
  6. Step 6: Final answer
    x = 149.37

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.