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Finding the Fourth Proportional to 629,857,493.80, 944,786,240.70 and 476,802,485.80

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Solution

The fourth proportional to 629,857,493.80, 944,786,240.70 and 476,802,485.80 is: 715,203,728.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,857,493.80 : 944,786,240.70 = 476,802,485.80 : x
  2. Step 2: Convert to fraction form
    629,857,493.80/944,786,240.70 = 476,802,485.80/x
  3. Step 3: Cross multiply
    629,857,493.80x = 944,786,240.70 × 476,802,485.80
  4. Step 4: Simplify right side
    629,857,493.80x = 450,476,428,115,397,184
  5. Step 5: Solve for x
    x = 450,476,428,115,397,184/629,857,493.80
  6. Step 6: Final answer
    x = 715,203,728.70

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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.