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Finding the Third Proportional to 194.25 and 321.75

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Solution

The third proportional to 194.25 and 321.75 is: 532.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    194.25 : 321.75 = 321.75 : x
  2. Step 2: Convert to fraction form
    194.25/321.75 = 321.75/x
  3. Step 3: Cross multiply
    194.25x = 321.75 × 321.75
  4. Step 4: Simplify right side
    194.25x = 103,523.06
  5. Step 5: Solve for x
    x = 103,523.06/194.25
  6. Step 6: Final answer
    x = 532.94

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Why These Related Problems?

These problems maintain the same ratio (1.66) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.