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Finding the Fourth Proportional to 14,839.93, 20,478.63 and 8,125.39

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Solution

The fourth proportional to 14,839.93, 20,478.63 and 8,125.39 is: 11,212.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,839.93 : 20,478.63 = 8,125.39 : x
  2. Step 2: Convert to fraction form
    14,839.93/20,478.63 = 8,125.39/x
  3. Step 3: Cross multiply
    14,839.93x = 20,478.63 × 8,125.39
  4. Step 4: Simplify right side
    14,839.93x = 166,396,855.42
  5. Step 5: Solve for x
    x = 166,396,855.42/14,839.93
  6. Step 6: Final answer
    x = 11,212.78

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