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Finding the Fourth Proportional to 91,701.55, 128,226.65 and 91,701.55

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Solution

The fourth proportional to 91,701.55, 128,226.65 and 91,701.55 is: 128,226.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,701.55 : 128,226.65 = 91,701.55 : x
  2. Step 2: Convert to fraction form
    91,701.55/128,226.65 = 91,701.55/x
  3. Step 3: Cross multiply
    91,701.55x = 128,226.65 × 91,701.55
  4. Step 4: Simplify right side
    91,701.55x = 11,758,582,556.31
  5. Step 5: Solve for x
    x = 11,758,582,556.31/91,701.55
  6. Step 6: Final answer
    x = 128,226.65

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