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Finding the Third Proportional to 4,420 and 7,036

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Solution

The third proportional to 4,420 and 7,036 is: 11,200.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,420 : 7,036 = 7,036 : x
  2. Step 2: Convert to fraction form
    4,420/7,036 = 7,036/x
  3. Step 3: Cross multiply
    4,420x = 7,036 × 7,036
  4. Step 4: Simplify right side
    4,420x = 49,505,296
  5. Step 5: Solve for x
    x = 49,505,296/4,420
  6. Step 6: Final answer
    x = 11,200.29

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Why These Related Problems?

These problems maintain the same ratio (1.59) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.