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Finding the Fourth Proportional to 425,372,112.20, 638,058,168.30 and 425,372,112.20

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Solution

The fourth proportional to 425,372,112.20, 638,058,168.30 and 425,372,112.20 is: 638,058,168.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    425,372,112.20 : 638,058,168.30 = 425,372,112.20 : x
  2. Step 2: Convert to fraction form
    425,372,112.20/638,058,168.30 = 425,372,112.20/x
  3. Step 3: Cross multiply
    425,372,112.20x = 638,058,168.30 × 425,372,112.20
  4. Step 4: Simplify right side
    425,372,112.20x = 271,412,150,756,234,048
  5. Step 5: Solve for x
    x = 271,412,150,756,234,048/425,372,112.20
  6. Step 6: Final answer
    x = 638,058,168.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.