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Finding the Third Proportional to 197.75 and 461.88

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Solution

The third proportional to 197.75 and 461.88 is: 1,078.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    197.75 : 461.88 = 461.88 : x
  2. Step 2: Convert to fraction form
    197.75/461.88 = 461.88/x
  3. Step 3: Cross multiply
    197.75x = 461.88 × 461.88
  4. Step 4: Simplify right side
    197.75x = 213,328.52
  5. Step 5: Solve for x
    x = 213,328.52/197.75
  6. Step 6: Final answer
    x = 1,078.78

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Why These Related Problems?

These problems maintain the same ratio (2.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.