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Finding the Third Proportional to 3,972,343.78 and 6,138,202.78

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Solution

The third proportional to 3,972,343.78 and 6,138,202.78 is: 9,484,962.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,972,343.78 : 6,138,202.78 = 6,138,202.78 : x
  2. Step 2: Convert to fraction form
    3,972,343.78/6,138,202.78 = 6,138,202.78/x
  3. Step 3: Cross multiply
    3,972,343.78x = 6,138,202.78 × 6,138,202.78
  4. Step 4: Simplify right side
    3,972,343.78x = 37,677,533,383,745.23
  5. Step 5: Solve for x
    x = 37,677,533,383,745.23/3,972,343.78
  6. Step 6: Final answer
    x = 9,484,962.90

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Why These Related Problems?

These problems maintain the same ratio (1.55) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.