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Finding the Fourth Proportional to 12,770.44, 17,618.36 and 7,922.92

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Solution

The fourth proportional to 12,770.44, 17,618.36 and 7,922.92 is: 10,930.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,770.44 : 17,618.36 = 7,922.92 : x
  2. Step 2: Convert to fraction form
    12,770.44/17,618.36 = 7,922.92/x
  3. Step 3: Cross multiply
    12,770.44x = 17,618.36 × 7,922.92
  4. Step 4: Simplify right side
    12,770.44x = 139,588,856.81
  5. Step 5: Solve for x
    x = 139,588,856.81/12,770.44
  6. Step 6: Final answer
    x = 10,930.62

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