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Finding the Fourth Proportional to 317,993,791.44, 476,990,853.56 and 99,661,138.08

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Solution

The fourth proportional to 317,993,791.44, 476,990,853.56 and 99,661,138.08 is: 149,491,759.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,993,791.44 : 476,990,853.56 = 99,661,138.08 : x
  2. Step 2: Convert to fraction form
    317,993,791.44/476,990,853.56 = 99,661,138.08/x
  3. Step 3: Cross multiply
    317,993,791.44x = 476,990,853.56 × 99,661,138.08
  4. Step 4: Simplify right side
    317,993,791.44x = 47,537,451,319,540,216
  5. Step 5: Solve for x
    x = 47,537,451,319,540,216/317,993,791.44
  6. Step 6: Final answer
    x = 149,491,759.27

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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.