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Finding the Third Proportional to 2,124 and 3,411

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Solution

The third proportional to 2,124 and 3,411 is: 5,477.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,124 : 3,411 = 3,411 : x
  2. Step 2: Convert to fraction form
    2,124/3,411 = 3,411/x
  3. Step 3: Cross multiply
    2,124x = 3,411 × 3,411
  4. Step 4: Simplify right side
    2,124x = 11,634,921
  5. Step 5: Solve for x
    x = 11,634,921/2,124
  6. Step 6: Final answer
    x = 5,477.83

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Why These Related Problems?

These problems maintain the same ratio (1.61) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.