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Finding the Third Proportional to 5,780 and 12,664

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Solution

The third proportional to 5,780 and 12,664 is: 27,746.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,780 : 12,664 = 12,664 : x
  2. Step 2: Convert to fraction form
    5,780/12,664 = 12,664/x
  3. Step 3: Cross multiply
    5,780x = 12,664 × 12,664
  4. Step 4: Simplify right side
    5,780x = 160,376,896
  5. Step 5: Solve for x
    x = 160,376,896/5,780
  6. Step 6: Final answer
    x = 27,746.87

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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.