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Finding the Third Proportional to 810 and 2,125

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Solution

The third proportional to 810 and 2,125 is: 5,574.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    810 : 2,125 = 2,125 : x
  2. Step 2: Convert to fraction form
    810/2,125 = 2,125/x
  3. Step 3: Cross multiply
    810x = 2,125 × 2,125
  4. Step 4: Simplify right side
    810x = 4,515,625
  5. Step 5: Solve for x
    x = 4,515,625/810
  6. Step 6: Final answer
    x = 5,574.85

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These problems maintain the same ratio (2.62) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.