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Finding the Fourth Proportional to 91,112.56, 136,669.74 and 31,949.68

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Solution

The fourth proportional to 91,112.56, 136,669.74 and 31,949.68 is: 47,924.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,112.56 : 136,669.74 = 31,949.68 : x
  2. Step 2: Convert to fraction form
    91,112.56/136,669.74 = 31,949.68/x
  3. Step 3: Cross multiply
    91,112.56x = 136,669.74 × 31,949.68
  4. Step 4: Simplify right side
    91,112.56x = 4,366,554,458.68
  5. Step 5: Solve for x
    x = 4,366,554,458.68/91,112.56
  6. Step 6: Final answer
    x = 47,924.84

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