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Finding the Fourth Proportional to 167.18, 250.61 and 115.83

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Solution

The fourth proportional to 167.18, 250.61 and 115.83 is: 173.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    167.18 : 250.61 = 115.83 : x
  2. Step 2: Convert to fraction form
    167.18/250.61 = 115.83/x
  3. Step 3: Cross multiply
    167.18x = 250.61 × 115.83
  4. Step 4: Simplify right side
    167.18x = 29,027.58
  5. Step 5: Solve for x
    x = 29,027.58/167.18
  6. Step 6: Final answer
    x = 173.64

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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.