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Finding the Third Proportional to 4,491 and 5,280.75

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Solution

The third proportional to 4,491 and 5,280.75 is: 6,209.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,491 : 5,280.75 = 5,280.75 : x
  2. Step 2: Convert to fraction form
    4,491/5,280.75 = 5,280.75/x
  3. Step 3: Cross multiply
    4,491x = 5,280.75 × 5,280.75
  4. Step 4: Simplify right side
    4,491x = 27,886,320.56
  5. Step 5: Solve for x
    x = 27,886,320.56/4,491
  6. Step 6: Final answer
    x = 6,209.38

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Why These Related Problems?

These problems maintain the same ratio (1.18) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.