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Finding the Third Proportional to 4,650.75 and 7,691.63

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Solution

The third proportional to 4,650.75 and 7,691.63 is: 12,720.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,650.75 : 7,691.63 = 7,691.63 : x
  2. Step 2: Convert to fraction form
    4,650.75/7,691.63 = 7,691.63/x
  3. Step 3: Cross multiply
    4,650.75x = 7,691.63 × 7,691.63
  4. Step 4: Simplify right side
    4,650.75x = 59,161,095.14
  5. Step 5: Solve for x
    x = 59,161,095.14/4,650.75
  6. Step 6: Final answer
    x = 12,720.76

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Why These Related Problems?

These problems maintain the same ratio (1.65) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.