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Finding the Third Proportional to 7,766 and 15,910

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Solution

The third proportional to 7,766 and 15,910 is: 32,594.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,766 : 15,910 = 15,910 : x
  2. Step 2: Convert to fraction form
    7,766/15,910 = 15,910/x
  3. Step 3: Cross multiply
    7,766x = 15,910 × 15,910
  4. Step 4: Simplify right side
    7,766x = 253,128,100
  5. Step 5: Solve for x
    x = 253,128,100/7,766
  6. Step 6: Final answer
    x = 32,594.40

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Why These Related Problems?

These problems maintain the same ratio (2.05) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.