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Finding the Third Proportional to 192.22 and 422.88

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Solution

The third proportional to 192.22 and 422.88 is: 930.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    192.22 : 422.88 = 422.88 : x
  2. Step 2: Convert to fraction form
    192.22/422.88 = 422.88/x
  3. Step 3: Cross multiply
    192.22x = 422.88 × 422.88
  4. Step 4: Simplify right side
    192.22x = 178,824.92
  5. Step 5: Solve for x
    x = 178,824.92/192.22
  6. Step 6: Final answer
    x = 930.33

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Why These Related Problems?

These problems maintain the same ratio (2.20) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.