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Finding the Fourth Proportional to 25,551.36, 38,281.44 and 13,857.12

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Solution

The fourth proportional to 25,551.36, 38,281.44 and 13,857.12 is: 20,760.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,551.36 : 38,281.44 = 13,857.12 : x
  2. Step 2: Convert to fraction form
    25,551.36/38,281.44 = 13,857.12/x
  3. Step 3: Cross multiply
    25,551.36x = 38,281.44 × 13,857.12
  4. Step 4: Simplify right side
    25,551.36x = 530,470,507.85
  5. Step 5: Solve for x
    x = 530,470,507.85/25,551.36
  6. Step 6: Final answer
    x = 20,760.95

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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.