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Finding the Fourth Proportional to 21,861.62, 32,794.23 and 7,072.91

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Solution

The fourth proportional to 21,861.62, 32,794.23 and 7,072.91 is: 10,609.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,861.62 : 32,794.23 = 7,072.91 : x
  2. Step 2: Convert to fraction form
    21,861.62/32,794.23 = 7,072.91/x
  3. Step 3: Cross multiply
    21,861.62x = 32,794.23 × 7,072.91
  4. Step 4: Simplify right side
    21,861.62x = 231,950,637.31
  5. Step 5: Solve for x
    x = 231,950,637.31/21,861.62
  6. Step 6: Final answer
    x = 10,609.95

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.