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Finding the Third Proportional to 1,217 and 1,884

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Solution

The third proportional to 1,217 and 1,884 is: 2,916.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,217 : 1,884 = 1,884 : x
  2. Step 2: Convert to fraction form
    1,217/1,884 = 1,884/x
  3. Step 3: Cross multiply
    1,217x = 1,884 × 1,884
  4. Step 4: Simplify right side
    1,217x = 3,549,456
  5. Step 5: Solve for x
    x = 3,549,456/1,217
  6. Step 6: Final answer
    x = 2,916.56

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.