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Finding the Fourth Proportional to 169.63, 234.09 and 92

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Solution

The fourth proportional to 169.63, 234.09 and 92 is: 126.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    169.63 : 234.09 = 92 : x
  2. Step 2: Convert to fraction form
    169.63/234.09 = 92/x
  3. Step 3: Cross multiply
    169.63x = 234.09 × 92
  4. Step 4: Simplify right side
    169.63x = 21,535.82
  5. Step 5: Solve for x
    x = 21,535.82/169.63
  6. Step 6: Final answer
    x = 126.96

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.