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Finding the Third Proportional to 3,411 and 3,711

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Solution

The third proportional to 3,411 and 3,711 is: 4,037.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,411 : 3,711 = 3,711 : x
  2. Step 2: Convert to fraction form
    3,411/3,711 = 3,711/x
  3. Step 3: Cross multiply
    3,411x = 3,711 × 3,711
  4. Step 4: Simplify right side
    3,411x = 13,771,521
  5. Step 5: Solve for x
    x = 13,771,521/3,411
  6. Step 6: Final answer
    x = 4,037.39

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Why These Related Problems?

These problems maintain the same ratio (1.09) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.