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Finding the Fourth Proportional to 419,904,025.80, 629,856,038.70 and 419,904,025.80

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Solution

The fourth proportional to 419,904,025.80, 629,856,038.70 and 419,904,025.80 is: 629,856,038.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,904,025.80 : 629,856,038.70 = 419,904,025.80 : x
  2. Step 2: Convert to fraction form
    419,904,025.80/629,856,038.70 = 419,904,025.80/x
  3. Step 3: Cross multiply
    419,904,025.80x = 629,856,038.70 × 419,904,025.80
  4. Step 4: Simplify right side
    419,904,025.80x = 264,479,086,324,570,624
  5. Step 5: Solve for x
    x = 264,479,086,324,570,624/419,904,025.80
  6. Step 6: Final answer
    x = 629,856,038.70

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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.