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Finding the Fourth Proportional to 93,480.08, 128,999.40 and 55,734.80

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Solution

The fourth proportional to 93,480.08, 128,999.40 and 55,734.80 is: 76,912.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,480.08 : 128,999.40 = 55,734.80 : x
  2. Step 2: Convert to fraction form
    93,480.08/128,999.40 = 55,734.80/x
  3. Step 3: Cross multiply
    93,480.08x = 128,999.40 × 55,734.80
  4. Step 4: Simplify right side
    93,480.08x = 7,189,755,759.12
  5. Step 5: Solve for x
    x = 7,189,755,759.12/93,480.08
  6. Step 6: Final answer
    x = 76,912.17

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