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Finding the Third Proportional to 769.50 and 1,326

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Solution

The third proportional to 769.50 and 1,326 is: 2,284.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    769.50 : 1,326 = 1,326 : x
  2. Step 2: Convert to fraction form
    769.50/1,326 = 1,326/x
  3. Step 3: Cross multiply
    769.50x = 1,326 × 1,326
  4. Step 4: Simplify right side
    769.50x = 1,758,276
  5. Step 5: Solve for x
    x = 1,758,276/769.50
  6. Step 6: Final answer
    x = 2,284.96

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Why These Related Problems?

These problems maintain the same ratio (1.72) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.