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Finding the Third Proportional to 644.25 and 1,197

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Solution

The third proportional to 644.25 and 1,197 is: 2,224.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    644.25 : 1,197 = 1,197 : x
  2. Step 2: Convert to fraction form
    644.25/1,197 = 1,197/x
  3. Step 3: Cross multiply
    644.25x = 1,197 × 1,197
  4. Step 4: Simplify right side
    644.25x = 1,432,809
  5. Step 5: Solve for x
    x = 1,432,809/644.25
  6. Step 6: Final answer
    x = 2,224.00

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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.