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Finding the Fourth Proportional to 419,904,964.60, 629,857,446.90 and 419,904,964.60

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Solution

The fourth proportional to 419,904,964.60, 629,857,446.90 and 419,904,964.60 is: 629,857,446.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    419,904,964.60 : 629,857,446.90 = 419,904,964.60 : x
  2. Step 2: Convert to fraction form
    419,904,964.60/629,857,446.90 = 419,904,964.60/x
  3. Step 3: Cross multiply
    419,904,964.60x = 629,857,446.90 × 419,904,964.60
  4. Step 4: Simplify right side
    419,904,964.60x = 264,480,268,943,590,880
  5. Step 5: Solve for x
    x = 264,480,268,943,590,880/419,904,964.60
  6. Step 6: Final answer
    x = 629,857,446.90

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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.