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Finding the Fourth Proportional to 91,028.86, 136,605.21 and 55,861.18

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Solution

The fourth proportional to 91,028.86, 136,605.21 and 55,861.18 is: 83,829.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,028.86 : 136,605.21 = 55,861.18 : x
  2. Step 2: Convert to fraction form
    91,028.86/136,605.21 = 55,861.18/x
  3. Step 3: Cross multiply
    91,028.86x = 136,605.21 × 55,861.18
  4. Step 4: Simplify right side
    91,028.86x = 7,630,928,224.75
  5. Step 5: Solve for x
    x = 7,630,928,224.75/91,028.86
  6. Step 6: Final answer
    x = 83,829.77

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