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Finding the Fourth Proportional to 167.25, 250.94 and 64.50

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Solution

The fourth proportional to 167.25, 250.94 and 64.50 is: 96.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    167.25 : 250.94 = 64.50 : x
  2. Step 2: Convert to fraction form
    167.25/250.94 = 64.50/x
  3. Step 3: Cross multiply
    167.25x = 250.94 × 64.50
  4. Step 4: Simplify right side
    167.25x = 16,185.63
  5. Step 5: Solve for x
    x = 16,185.63/167.25
  6. Step 6: Final answer
    x = 96.78

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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.