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Finding the Third Proportional to 2,921 and 4,412

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Solution

The third proportional to 2,921 and 4,412 is: 6,664.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,921 : 4,412 = 4,412 : x
  2. Step 2: Convert to fraction form
    2,921/4,412 = 4,412/x
  3. Step 3: Cross multiply
    2,921x = 4,412 × 4,412
  4. Step 4: Simplify right side
    2,921x = 19,465,744
  5. Step 5: Solve for x
    x = 19,465,744/2,921
  6. Step 6: Final answer
    x = 6,664.07

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.