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Finding the Third Proportional to 547 and 1,189

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Solution

The third proportional to 547 and 1,189 is: 2,584.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    547 : 1,189 = 1,189 : x
  2. Step 2: Convert to fraction form
    547/1,189 = 1,189/x
  3. Step 3: Cross multiply
    547x = 1,189 × 1,189
  4. Step 4: Simplify right side
    547x = 1,413,721
  5. Step 5: Solve for x
    x = 1,413,721/547
  6. Step 6: Final answer
    x = 2,584.50

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Why These Related Problems?

These problems maintain the same ratio (2.17) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.