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Finding the Third Proportional to 6,469 and 9,155

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Solution

The third proportional to 6,469 and 9,155 is: 12,956.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,469 : 9,155 = 9,155 : x
  2. Step 2: Convert to fraction form
    6,469/9,155 = 9,155/x
  3. Step 3: Cross multiply
    6,469x = 9,155 × 9,155
  4. Step 4: Simplify right side
    6,469x = 83,814,025
  5. Step 5: Solve for x
    x = 83,814,025/6,469
  6. Step 6: Final answer
    x = 12,956.26

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Why These Related Problems?

These problems maintain the same ratio (1.42) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.