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Finding the Fourth Proportional to 70,690.32, 106,034.94 and 18,099.72

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Solution

The fourth proportional to 70,690.32, 106,034.94 and 18,099.72 is: 27,149.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,690.32 : 106,034.94 = 18,099.72 : x
  2. Step 2: Convert to fraction form
    70,690.32/106,034.94 = 18,099.72/x
  3. Step 3: Cross multiply
    70,690.32x = 106,034.94 × 18,099.72
  4. Step 4: Simplify right side
    70,690.32x = 1,919,202,724.22
  5. Step 5: Solve for x
    x = 1,919,202,724.22/70,690.32
  6. Step 6: Final answer
    x = 27,149.44

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