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Finding the Fourth Proportional to 167.76, 251.60 and 46

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Solution

The fourth proportional to 167.76, 251.60 and 46 is: 68.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    167.76 : 251.60 = 46 : x
  2. Step 2: Convert to fraction form
    167.76/251.60 = 46/x
  3. Step 3: Cross multiply
    167.76x = 251.60 × 46
  4. Step 4: Simplify right side
    167.76x = 11,573.60
  5. Step 5: Solve for x
    x = 11,573.60/167.76
  6. Step 6: Final answer
    x = 68.99

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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.