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Finding the Fourth Proportional to 167.68, 251.72 and 106.60

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Solution

The fourth proportional to 167.68, 251.72 and 106.60 is: 160.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    167.68 : 251.72 = 106.60 : x
  2. Step 2: Convert to fraction form
    167.68/251.72 = 106.60/x
  3. Step 3: Cross multiply
    167.68x = 251.72 × 106.60
  4. Step 4: Simplify right side
    167.68x = 26,833.35
  5. Step 5: Solve for x
    x = 26,833.35/167.68
  6. Step 6: Final answer
    x = 160.03

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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.