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Finding the Third Proportional to 1,938 and 3,826

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Solution

The third proportional to 1,938 and 3,826 is: 7,553.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,938 : 3,826 = 3,826 : x
  2. Step 2: Convert to fraction form
    1,938/3,826 = 3,826/x
  3. Step 3: Cross multiply
    1,938x = 3,826 × 3,826
  4. Step 4: Simplify right side
    1,938x = 14,638,276
  5. Step 5: Solve for x
    x = 14,638,276/1,938
  6. Step 6: Final answer
    x = 7,553.29

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Why These Related Problems?

These problems maintain the same ratio (1.97) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.