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Finding the Third Proportional to 3,316 and 4,420

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Solution

The third proportional to 3,316 and 4,420 is: 5,891.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,316 : 4,420 = 4,420 : x
  2. Step 2: Convert to fraction form
    3,316/4,420 = 4,420/x
  3. Step 3: Cross multiply
    3,316x = 4,420 × 4,420
  4. Step 4: Simplify right side
    3,316x = 19,536,400
  5. Step 5: Solve for x
    x = 19,536,400/3,316
  6. Step 6: Final answer
    x = 5,891.56

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Why These Related Problems?

These problems maintain the same ratio (1.33) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.