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Finding the Third Proportional to 194.91 and 212.63

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Solution

The third proportional to 194.91 and 212.63 is: 231.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    194.91 : 212.63 = 212.63 : x
  2. Step 2: Convert to fraction form
    194.91/212.63 = 212.63/x
  3. Step 3: Cross multiply
    194.91x = 212.63 × 212.63
  4. Step 4: Simplify right side
    194.91x = 45,209.39
  5. Step 5: Solve for x
    x = 45,209.39/194.91
  6. Step 6: Final answer
    x = 231.95

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Why These Related Problems?

These problems maintain the same ratio (1.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.