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Finding the Third Proportional to 789 and 1,182

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Solution

The third proportional to 789 and 1,182 is: 1,770.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    789 : 1,182 = 1,182 : x
  2. Step 2: Convert to fraction form
    789/1,182 = 1,182/x
  3. Step 3: Cross multiply
    789x = 1,182 × 1,182
  4. Step 4: Simplify right side
    789x = 1,397,124
  5. Step 5: Solve for x
    x = 1,397,124/789
  6. Step 6: Final answer
    x = 1,770.75

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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.