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Finding the Third Proportional to 7,404 and 15,861

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Solution

The third proportional to 7,404 and 15,861 is: 33,977.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,404 : 15,861 = 15,861 : x
  2. Step 2: Convert to fraction form
    7,404/15,861 = 15,861/x
  3. Step 3: Cross multiply
    7,404x = 15,861 × 15,861
  4. Step 4: Simplify right side
    7,404x = 251,571,321
  5. Step 5: Solve for x
    x = 251,571,321/7,404
  6. Step 6: Final answer
    x = 33,977.76

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Why These Related Problems?

These problems maintain the same ratio (2.14) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.