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Finding the Fourth Proportional to 14,993.24, 20,689.59 and 8,278.88

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Solution

The fourth proportional to 14,993.24, 20,689.59 and 8,278.88 is: 11,424.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,993.24 : 20,689.59 = 8,278.88 : x
  2. Step 2: Convert to fraction form
    14,993.24/20,689.59 = 8,278.88/x
  3. Step 3: Cross multiply
    14,993.24x = 20,689.59 × 8,278.88
  4. Step 4: Simplify right side
    14,993.24x = 171,286,632.86
  5. Step 5: Solve for x
    x = 171,286,632.86/14,993.24
  6. Step 6: Final answer
    x = 11,424.26

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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.