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Finding the Third Proportional to 6,993 and 12,438

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Solution

The third proportional to 6,993 and 12,438 is: 22,122.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,993 : 12,438 = 12,438 : x
  2. Step 2: Convert to fraction form
    6,993/12,438 = 12,438/x
  3. Step 3: Cross multiply
    6,993x = 12,438 × 12,438
  4. Step 4: Simplify right side
    6,993x = 154,703,844
  5. Step 5: Solve for x
    x = 154,703,844/6,993
  6. Step 6: Final answer
    x = 22,122.67

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Why These Related Problems?

These problems maintain the same ratio (1.78) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.