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Finding the Third Proportional to 827 and 1,916.50

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Solution

The third proportional to 827 and 1,916.50 is: 4,441.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    827 : 1,916.50 = 1,916.50 : x
  2. Step 2: Convert to fraction form
    827/1,916.50 = 1,916.50/x
  3. Step 3: Cross multiply
    827x = 1,916.50 × 1,916.50
  4. Step 4: Simplify right side
    827x = 3,672,972.25
  5. Step 5: Solve for x
    x = 3,672,972.25/827
  6. Step 6: Final answer
    x = 4,441.32

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Why These Related Problems?

These problems maintain the same ratio (2.32) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.