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Finding the Fourth Proportional to 64,808.91, 89,447.90 and 37,949.85

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Solution

The fourth proportional to 64,808.91, 89,447.90 and 37,949.85 is: 52,377.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,808.91 : 89,447.90 = 37,949.85 : x
  2. Step 2: Convert to fraction form
    64,808.91/89,447.90 = 37,949.85/x
  3. Step 3: Cross multiply
    64,808.91x = 89,447.90 × 37,949.85
  4. Step 4: Simplify right side
    64,808.91x = 3,394,534,198.07
  5. Step 5: Solve for x
    x = 3,394,534,198.07/64,808.91
  6. Step 6: Final answer
    x = 52,377.59

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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.