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Finding the Fourth Proportional to 167.67, 251.01 and 109.76

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Solution

The fourth proportional to 167.67, 251.01 and 109.76 is: 164.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    167.67 : 251.01 = 109.76 : x
  2. Step 2: Convert to fraction form
    167.67/251.01 = 109.76/x
  3. Step 3: Cross multiply
    167.67x = 251.01 × 109.76
  4. Step 4: Simplify right side
    167.67x = 27,549.60
  5. Step 5: Solve for x
    x = 27,549.60/167.67
  6. Step 6: Final answer
    x = 164.31

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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.