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Finding the Third Proportional to 3,747.75 and 5,621.63

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Solution

The third proportional to 3,747.75 and 5,621.63 is: 8,432.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,747.75 : 5,621.63 = 5,621.63 : x
  2. Step 2: Convert to fraction form
    3,747.75/5,621.63 = 5,621.63/x
  3. Step 3: Cross multiply
    3,747.75x = 5,621.63 × 5,621.63
  4. Step 4: Simplify right side
    3,747.75x = 31,602,667.64
  5. Step 5: Solve for x
    x = 31,602,667.64/3,747.75
  6. Step 6: Final answer
    x = 8,432.44

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.