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Finding the Fourth Proportional to 135,111.16, 186,443.53 and 74,678.41

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Solution

The fourth proportional to 135,111.16, 186,443.53 and 74,678.41 is: 103,050.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,111.16 : 186,443.53 = 74,678.41 : x
  2. Step 2: Convert to fraction form
    135,111.16/186,443.53 = 74,678.41/x
  3. Step 3: Cross multiply
    135,111.16x = 186,443.53 × 74,678.41
  4. Step 4: Simplify right side
    135,111.16x = 13,923,306,375.19
  5. Step 5: Solve for x
    x = 13,923,306,375.19/135,111.16
  6. Step 6: Final answer
    x = 103,050.75

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