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Finding the Fourth Proportional to 118, 176.84 and 63.92

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Solution

The fourth proportional to 118, 176.84 and 63.92 is: 95.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    118 : 176.84 = 63.92 : x
  2. Step 2: Convert to fraction form
    118/176.84 = 63.92/x
  3. Step 3: Cross multiply
    118x = 176.84 × 63.92
  4. Step 4: Simplify right side
    118x = 11,303.61
  5. Step 5: Solve for x
    x = 11,303.61/118
  6. Step 6: Final answer
    x = 95.79

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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.