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Finding the Fourth Proportional to 422,637,640.80, 592,498,912.80 and 422,637,640.80

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Solution

The fourth proportional to 422,637,640.80, 592,498,912.80 and 422,637,640.80 is: 592,498,912.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,637,640.80 : 592,498,912.80 = 422,637,640.80 : x
  2. Step 2: Convert to fraction form
    422,637,640.80/592,498,912.80 = 422,637,640.80/x
  3. Step 3: Cross multiply
    422,637,640.80x = 592,498,912.80 × 422,637,640.80
  4. Step 4: Simplify right side
    422,637,640.80x = 250,412,342,682,356,896
  5. Step 5: Solve for x
    x = 250,412,342,682,356,896/422,637,640.80
  6. Step 6: Final answer
    x = 592,498,912.80

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.