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Finding the Third Proportional to 891 and 1,653

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Solution

The third proportional to 891 and 1,653 is: 3,066.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    891 : 1,653 = 1,653 : x
  2. Step 2: Convert to fraction form
    891/1,653 = 1,653/x
  3. Step 3: Cross multiply
    891x = 1,653 × 1,653
  4. Step 4: Simplify right side
    891x = 2,732,409
  5. Step 5: Solve for x
    x = 2,732,409/891
  6. Step 6: Final answer
    x = 3,066.68

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Why These Related Problems?

These problems maintain the same ratio (1.86) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.