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Finding the Third Proportional to 4,012 and 7,156

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Solution

The third proportional to 4,012 and 7,156 is: 12,763.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,012 : 7,156 = 7,156 : x
  2. Step 2: Convert to fraction form
    4,012/7,156 = 7,156/x
  3. Step 3: Cross multiply
    4,012x = 7,156 × 7,156
  4. Step 4: Simplify right side
    4,012x = 51,208,336
  5. Step 5: Solve for x
    x = 51,208,336/4,012
  6. Step 6: Final answer
    x = 12,763.79

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Why These Related Problems?

These problems maintain the same ratio (1.78) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.