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Finding the Fourth Proportional to 64,793.72, 89,404.49 and 36,107.09

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Solution

The fourth proportional to 64,793.72, 89,404.49 and 36,107.09 is: 49,821.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,793.72 : 89,404.49 = 36,107.09 : x
  2. Step 2: Convert to fraction form
    64,793.72/89,404.49 = 36,107.09/x
  3. Step 3: Cross multiply
    64,793.72x = 89,404.49 × 36,107.09
  4. Step 4: Simplify right side
    64,793.72x = 3,228,135,855.88
  5. Step 5: Solve for x
    x = 3,228,135,855.88/64,793.72
  6. Step 6: Final answer
    x = 49,821.74

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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.