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Finding the Fourth Proportional to 13,995.72, 20,992.86 and 5,229.95

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Solution

The fourth proportional to 13,995.72, 20,992.86 and 5,229.95 is: 7,844.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,995.72 : 20,992.86 = 5,229.95 : x
  2. Step 2: Convert to fraction form
    13,995.72/20,992.86 = 5,229.95/x
  3. Step 3: Cross multiply
    13,995.72x = 20,992.86 × 5,229.95
  4. Step 4: Simplify right side
    13,995.72x = 109,791,503.19
  5. Step 5: Solve for x
    x = 109,791,503.19/13,995.72
  6. Step 6: Final answer
    x = 7,844.65

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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.