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Finding the Third Proportional to 2,202 and 3,291

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Solution

The third proportional to 2,202 and 3,291 is: 4,918.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,202 : 3,291 = 3,291 : x
  2. Step 2: Convert to fraction form
    2,202/3,291 = 3,291/x
  3. Step 3: Cross multiply
    2,202x = 3,291 × 3,291
  4. Step 4: Simplify right side
    2,202x = 10,830,681
  5. Step 5: Solve for x
    x = 10,830,681/2,202
  6. Step 6: Final answer
    x = 4,918.57

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.