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Finding the Third Proportional to 828 and 1,104

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Solution

The third proportional to 828 and 1,104 is: 1,472

Step by Step Solution

  1. Step 1: Write the proportion equation
    828 : 1,104 = 1,104 : x
  2. Step 2: Convert to fraction form
    828/1,104 = 1,104/x
  3. Step 3: Cross multiply
    828x = 1,104 × 1,104
  4. Step 4: Simplify right side
    828x = 1,218,816
  5. Step 5: Solve for x
    x = 1,218,816/828
  6. Step 6: Final answer
    x = 1,472

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.