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Finding the Third Proportional to 3,330 and 5,359.50

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Solution

The third proportional to 3,330 and 5,359.50 is: 8,625.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,330 : 5,359.50 = 5,359.50 : x
  2. Step 2: Convert to fraction form
    3,330/5,359.50 = 5,359.50/x
  3. Step 3: Cross multiply
    3,330x = 5,359.50 × 5,359.50
  4. Step 4: Simplify right side
    3,330x = 28,724,240.25
  5. Step 5: Solve for x
    x = 28,724,240.25/3,330
  6. Step 6: Final answer
    x = 8,625.90

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Why These Related Problems?

These problems maintain the same ratio (1.61) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.