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Finding the Fourth Proportional to 74,581.86, 111,872.78 and 61,406.55

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Solution

The fourth proportional to 74,581.86, 111,872.78 and 61,406.55 is: 92,109.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,581.86 : 111,872.78 = 61,406.55 : x
  2. Step 2: Convert to fraction form
    74,581.86/111,872.78 = 61,406.55/x
  3. Step 3: Cross multiply
    74,581.86x = 111,872.78 × 61,406.55
  4. Step 4: Simplify right side
    74,581.86x = 6,869,721,727.36
  5. Step 5: Solve for x
    x = 6,869,721,727.36/74,581.86
  6. Step 6: Final answer
    x = 92,109.82

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