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Finding the Third Proportional to 5,786 and 12,679

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Solution

The third proportional to 5,786 and 12,679 is: 27,783.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,786 : 12,679 = 12,679 : x
  2. Step 2: Convert to fraction form
    5,786/12,679 = 12,679/x
  3. Step 3: Cross multiply
    5,786x = 12,679 × 12,679
  4. Step 4: Simplify right side
    5,786x = 160,757,041
  5. Step 5: Solve for x
    x = 160,757,041/5,786
  6. Step 6: Final answer
    x = 27,783.80

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Why These Related Problems?

These problems maintain the same ratio (2.19) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.