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Finding the Third Proportional to 906 and 2,187

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Solution

The third proportional to 906 and 2,187 is: 5,279.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    906 : 2,187 = 2,187 : x
  2. Step 2: Convert to fraction form
    906/2,187 = 2,187/x
  3. Step 3: Cross multiply
    906x = 2,187 × 2,187
  4. Step 4: Simplify right side
    906x = 4,782,969
  5. Step 5: Solve for x
    x = 4,782,969/906
  6. Step 6: Final answer
    x = 5,279.22

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These problems maintain the same ratio (2.41) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.