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Finding the Fourth Proportional to 169.92, 255 and 92.94

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Solution

The fourth proportional to 169.92, 255 and 92.94 is: 139.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    169.92 : 255 = 92.94 : x
  2. Step 2: Convert to fraction form
    169.92/255 = 92.94/x
  3. Step 3: Cross multiply
    169.92x = 255 × 92.94
  4. Step 4: Simplify right side
    169.92x = 23,699.70
  5. Step 5: Solve for x
    x = 23,699.70/169.92
  6. Step 6: Final answer
    x = 139.48

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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.