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Finding the Third Proportional to 326 and 791.50

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Solution

The third proportional to 326 and 791.50 is: 1,921.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    326 : 791.50 = 791.50 : x
  2. Step 2: Convert to fraction form
    326/791.50 = 791.50/x
  3. Step 3: Cross multiply
    326x = 791.50 × 791.50
  4. Step 4: Simplify right side
    326x = 626,472.25
  5. Step 5: Solve for x
    x = 626,472.25/326
  6. Step 6: Final answer
    x = 1,921.69

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Why These Related Problems?

These problems maintain the same ratio (2.43) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.