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Finding the Fourth Proportional to 534,135,906.60, 801,203,859.90 and 396,386,399.40

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Solution

The fourth proportional to 534,135,906.60, 801,203,859.90 and 396,386,399.40 is: 594,579,599.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    534,135,906.60 : 801,203,859.90 = 396,386,399.40 : x
  2. Step 2: Convert to fraction form
    534,135,906.60/801,203,859.90 = 396,386,399.40/x
  3. Step 3: Cross multiply
    534,135,906.60x = 801,203,859.90 × 396,386,399.40
  4. Step 4: Simplify right side
    534,135,906.60x = 317,586,313,211,143,040
  5. Step 5: Solve for x
    x = 317,586,313,211,143,040/534,135,906.60
  6. Step 6: Final answer
    x = 594,579,599.10

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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.