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Finding the Fourth Proportional to 664,570,789.20, 996,856,183.80 and 664,570,789.20

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Solution

The fourth proportional to 664,570,789.20, 996,856,183.80 and 664,570,789.20 is: 996,856,183.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,570,789.20 : 996,856,183.80 = 664,570,789.20 : x
  2. Step 2: Convert to fraction form
    664,570,789.20/996,856,183.80 = 664,570,789.20/x
  3. Step 3: Cross multiply
    664,570,789.20x = 996,856,183.80 × 664,570,789.20
  4. Step 4: Simplify right side
    664,570,789.20x = 662,481,500,786,866,304
  5. Step 5: Solve for x
    x = 662,481,500,786,866,304/664,570,789.20
  6. Step 6: Final answer
    x = 996,856,183.80

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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.