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Finding the Third Proportional to 3,921 and 5,886

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Solution

The third proportional to 3,921 and 5,886 is: 8,835.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,921 : 5,886 = 5,886 : x
  2. Step 2: Convert to fraction form
    3,921/5,886 = 5,886/x
  3. Step 3: Cross multiply
    3,921x = 5,886 × 5,886
  4. Step 4: Simplify right side
    3,921x = 34,644,996
  5. Step 5: Solve for x
    x = 34,644,996/3,921
  6. Step 6: Final answer
    x = 8,835.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.