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Finding the Fourth Proportional to 704,205.01, 971,855.09 and 394,138.61

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Solution

The fourth proportional to 704,205.01, 971,855.09 and 394,138.61 is: 543,940.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    704,205.01 : 971,855.09 = 394,138.61 : x
  2. Step 2: Convert to fraction form
    704,205.01/971,855.09 = 394,138.61/x
  3. Step 3: Cross multiply
    704,205.01x = 971,855.09 × 394,138.61
  4. Step 4: Simplify right side
    704,205.01x = 383,045,614,294.03
  5. Step 5: Solve for x
    x = 383,045,614,294.03/704,205.01
  6. Step 6: Final answer
    x = 543,940.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.