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Finding the Third Proportional to 1,202 and 1,919

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Solution

The third proportional to 1,202 and 1,919 is: 3,063.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,202 : 1,919 = 1,919 : x
  2. Step 2: Convert to fraction form
    1,202/1,919 = 1,919/x
  3. Step 3: Cross multiply
    1,202x = 1,919 × 1,919
  4. Step 4: Simplify right side
    1,202x = 3,682,561
  5. Step 5: Solve for x
    x = 3,682,561/1,202
  6. Step 6: Final answer
    x = 3,063.69

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Why These Related Problems?

These problems maintain the same ratio (1.60) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.