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Finding the Fourth Proportional to 167.18, 250.70 and 70.96

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Solution

The fourth proportional to 167.18, 250.70 and 70.96 is: 106.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    167.18 : 250.70 = 70.96 : x
  2. Step 2: Convert to fraction form
    167.18/250.70 = 70.96/x
  3. Step 3: Cross multiply
    167.18x = 250.70 × 70.96
  4. Step 4: Simplify right side
    167.18x = 17,789.67
  5. Step 5: Solve for x
    x = 17,789.67/167.18
  6. Step 6: Final answer
    x = 106.41

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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.