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Finding the Fourth Proportional to 297.91, 446.91 and 92.46

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Solution

The fourth proportional to 297.91, 446.91 and 92.46 is: 138.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    297.91 : 446.91 = 92.46 : x
  2. Step 2: Convert to fraction form
    297.91/446.91 = 92.46/x
  3. Step 3: Cross multiply
    297.91x = 446.91 × 92.46
  4. Step 4: Simplify right side
    297.91x = 41,321.30
  5. Step 5: Solve for x
    x = 41,321.30/297.91
  6. Step 6: Final answer
    x = 138.70

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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.