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Finding the Third Proportional to 741.50 and 961.75

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Solution

The third proportional to 741.50 and 961.75 is: 1,247.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    741.50 : 961.75 = 961.75 : x
  2. Step 2: Convert to fraction form
    741.50/961.75 = 961.75/x
  3. Step 3: Cross multiply
    741.50x = 961.75 × 961.75
  4. Step 4: Simplify right side
    741.50x = 924,963.06
  5. Step 5: Solve for x
    x = 924,963.06/741.50
  6. Step 6: Final answer
    x = 1,247.42

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Why These Related Problems?

These problems maintain the same ratio (1.30) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.