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Finding the Third Proportional to 2,564 and 6,930

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Solution

The third proportional to 2,564 and 6,930 is: 18,730.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,564 : 6,930 = 6,930 : x
  2. Step 2: Convert to fraction form
    2,564/6,930 = 6,930/x
  3. Step 3: Cross multiply
    2,564x = 6,930 × 6,930
  4. Step 4: Simplify right side
    2,564x = 48,024,900
  5. Step 5: Solve for x
    x = 48,024,900/2,564
  6. Step 6: Final answer
    x = 18,730.46

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Why These Related Problems?

These problems maintain the same ratio (2.70) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.