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Finding the Third Proportional to 521 and 1,412

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Solution

The third proportional to 521 and 1,412 is: 3,826.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    521 : 1,412 = 1,412 : x
  2. Step 2: Convert to fraction form
    521/1,412 = 1,412/x
  3. Step 3: Cross multiply
    521x = 1,412 × 1,412
  4. Step 4: Simplify right side
    521x = 1,993,744
  5. Step 5: Solve for x
    x = 1,993,744/521
  6. Step 6: Final answer
    x = 3,826.76

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These problems maintain the same ratio (2.71) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.