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Finding the Third Proportional to 7,145 and 16,697

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Solution

The third proportional to 7,145 and 16,697 is: 39,018.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,145 : 16,697 = 16,697 : x
  2. Step 2: Convert to fraction form
    7,145/16,697 = 16,697/x
  3. Step 3: Cross multiply
    7,145x = 16,697 × 16,697
  4. Step 4: Simplify right side
    7,145x = 278,789,809
  5. Step 5: Solve for x
    x = 278,789,809/7,145
  6. Step 6: Final answer
    x = 39,018.87

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Why These Related Problems?

These problems maintain the same ratio (2.34) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.