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Finding the Fourth Proportional to 111,928.80, 167,893.20 and 99,681.60

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Solution

The fourth proportional to 111,928.80, 167,893.20 and 99,681.60 is: 149,522.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,928.80 : 167,893.20 = 99,681.60 : x
  2. Step 2: Convert to fraction form
    111,928.80/167,893.20 = 99,681.60/x
  3. Step 3: Cross multiply
    111,928.80x = 167,893.20 × 99,681.60
  4. Step 4: Simplify right side
    111,928.80x = 16,735,862,805.12
  5. Step 5: Solve for x
    x = 16,735,862,805.12/111,928.80
  6. Step 6: Final answer
    x = 149,522.40

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