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Finding the Third Proportional to 774 and 1,163.25

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Solution

The third proportional to 774 and 1,163.25 is: 1,748.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    774 : 1,163.25 = 1,163.25 : x
  2. Step 2: Convert to fraction form
    774/1,163.25 = 1,163.25/x
  3. Step 3: Cross multiply
    774x = 1,163.25 × 1,163.25
  4. Step 4: Simplify right side
    774x = 1,353,150.56
  5. Step 5: Solve for x
    x = 1,353,150.56/774
  6. Step 6: Final answer
    x = 1,748.26

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.