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Finding the Third Proportional to 465 and 791.50

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Solution

The third proportional to 465 and 791.50 is: 1,347.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    465 : 791.50 = 791.50 : x
  2. Step 2: Convert to fraction form
    465/791.50 = 791.50/x
  3. Step 3: Cross multiply
    465x = 791.50 × 791.50
  4. Step 4: Simplify right side
    465x = 626,472.25
  5. Step 5: Solve for x
    x = 626,472.25/465
  6. Step 6: Final answer
    x = 1,347.25

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Why These Related Problems?

These problems maintain the same ratio (1.70) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.