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Finding the Fourth Proportional to 317,993,790.46, 476,990,852.04 and 99,661,137.06

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Solution

The fourth proportional to 317,993,790.46, 476,990,852.04 and 99,661,137.06 is: 149,491,757.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    317,993,790.46 : 476,990,852.04 = 99,661,137.06 : x
  2. Step 2: Convert to fraction form
    317,993,790.46/476,990,852.04 = 99,661,137.06/x
  3. Step 3: Cross multiply
    317,993,790.46x = 476,990,852.04 × 99,661,137.06
  4. Step 4: Simplify right side
    317,993,790.46x = 47,537,450,681,524,624
  5. Step 5: Solve for x
    x = 47,537,450,681,524,624/317,993,790.46
  6. Step 6: Final answer
    x = 149,491,757.73

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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.