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Finding the Third Proportional to 132.25 and 206.50

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Solution

The third proportional to 132.25 and 206.50 is: 322.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    132.25 : 206.50 = 206.50 : x
  2. Step 2: Convert to fraction form
    132.25/206.50 = 206.50/x
  3. Step 3: Cross multiply
    132.25x = 206.50 × 206.50
  4. Step 4: Simplify right side
    132.25x = 42,642.25
  5. Step 5: Solve for x
    x = 42,642.25/132.25
  6. Step 6: Final answer
    x = 322.44

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Why These Related Problems?

These problems maintain the same ratio (1.56) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.