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Finding the Fourth Proportional to 605,071,131.40, 906,331,238.70 and 605,071,131.40

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Solution

The fourth proportional to 605,071,131.40, 906,331,238.70 and 605,071,131.40 is: 906,331,238.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    605,071,131.40 : 906,331,238.70 = 605,071,131.40 : x
  2. Step 2: Convert to fraction form
    605,071,131.40/906,331,238.70 = 605,071,131.40/x
  3. Step 3: Cross multiply
    605,071,131.40x = 906,331,238.70 × 605,071,131.40
  4. Step 4: Simplify right side
    605,071,131.40x = 548,394,868,023,372,480
  5. Step 5: Solve for x
    x = 548,394,868,023,372,480/605,071,131.40
  6. Step 6: Final answer
    x = 906,331,238.70

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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.