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Finding the Fourth Proportional to 16,905.24, 25,361.70 and 5,219.40

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Solution

The fourth proportional to 16,905.24, 25,361.70 and 5,219.40 is: 7,830.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,905.24 : 25,361.70 = 5,219.40 : x
  2. Step 2: Convert to fraction form
    16,905.24/25,361.70 = 5,219.40/x
  3. Step 3: Cross multiply
    16,905.24x = 25,361.70 × 5,219.40
  4. Step 4: Simplify right side
    16,905.24x = 132,372,856.98
  5. Step 5: Solve for x
    x = 132,372,856.98/16,905.24
  6. Step 6: Final answer
    x = 7,830.29

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