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Finding the Fourth Proportional to 115,930.40, 173,665.20 and 66,624.80

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Solution

The fourth proportional to 115,930.40, 173,665.20 and 66,624.80 is: 99,804.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,930.40 : 173,665.20 = 66,624.80 : x
  2. Step 2: Convert to fraction form
    115,930.40/173,665.20 = 66,624.80/x
  3. Step 3: Cross multiply
    115,930.40x = 173,665.20 × 66,624.80
  4. Step 4: Simplify right side
    115,930.40x = 11,570,409,216.96
  5. Step 5: Solve for x
    x = 11,570,409,216.96/115,930.40
  6. Step 6: Final answer
    x = 99,804.79

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