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Finding the Fourth Proportional to 167.74, 251.71 and 109.92

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Solution

The fourth proportional to 167.74, 251.71 and 109.92 is: 164.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    167.74 : 251.71 = 109.92 : x
  2. Step 2: Convert to fraction form
    167.74/251.71 = 109.92/x
  3. Step 3: Cross multiply
    167.74x = 251.71 × 109.92
  4. Step 4: Simplify right side
    167.74x = 27,668.63
  5. Step 5: Solve for x
    x = 27,668.63/167.74
  6. Step 6: Final answer
    x = 164.95

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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.