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Finding the Third Proportional to 717 and 947.25

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Solution

The third proportional to 717 and 947.25 is: 1,251.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    717 : 947.25 = 947.25 : x
  2. Step 2: Convert to fraction form
    717/947.25 = 947.25/x
  3. Step 3: Cross multiply
    717x = 947.25 × 947.25
  4. Step 4: Simplify right side
    717x = 897,282.56
  5. Step 5: Solve for x
    x = 897,282.56/717
  6. Step 6: Final answer
    x = 1,251.44

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Why These Related Problems?

These problems maintain the same ratio (1.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.