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Finding the Third Proportional to 713.50 and 961.75

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Solution

The third proportional to 713.50 and 961.75 is: 1,296.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    713.50 : 961.75 = 961.75 : x
  2. Step 2: Convert to fraction form
    713.50/961.75 = 961.75/x
  3. Step 3: Cross multiply
    713.50x = 961.75 × 961.75
  4. Step 4: Simplify right side
    713.50x = 924,963.06
  5. Step 5: Solve for x
    x = 924,963.06/713.50
  6. Step 6: Final answer
    x = 1,296.37

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Why These Related Problems?

These problems maintain the same ratio (1.35) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.