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Finding the Third Proportional to 4,012 and 5,622

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Solution

The third proportional to 4,012 and 5,622 is: 7,878.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,012 : 5,622 = 5,622 : x
  2. Step 2: Convert to fraction form
    4,012/5,622 = 5,622/x
  3. Step 3: Cross multiply
    4,012x = 5,622 × 5,622
  4. Step 4: Simplify right side
    4,012x = 31,606,884
  5. Step 5: Solve for x
    x = 31,606,884/4,012
  6. Step 6: Final answer
    x = 7,878.09

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.