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Finding the Fourth Proportional to 6,641,791.24, 9,965,836.16 and 3,951,431.32

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Solution

The fourth proportional to 6,641,791.24, 9,965,836.16 and 3,951,431.32 is: 5,929,020.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,641,791.24 : 9,965,836.16 = 3,951,431.32 : x
  2. Step 2: Convert to fraction form
    6,641,791.24/9,965,836.16 = 3,951,431.32/x
  3. Step 3: Cross multiply
    6,641,791.24x = 9,965,836.16 × 3,951,431.32
  4. Step 4: Simplify right side
    6,641,791.24x = 39,379,317,132,612.53
  5. Step 5: Solve for x
    x = 39,379,317,132,612.53/6,641,791.24
  6. Step 6: Final answer
    x = 5,929,020.61

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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.