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Finding the Fourth Proportional to 98,720.70, 148,081.05 and 27,643.20

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Solution

The fourth proportional to 98,720.70, 148,081.05 and 27,643.20 is: 41,464.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,720.70 : 148,081.05 = 27,643.20 : x
  2. Step 2: Convert to fraction form
    98,720.70/148,081.05 = 27,643.20/x
  3. Step 3: Cross multiply
    98,720.70x = 148,081.05 × 27,643.20
  4. Step 4: Simplify right side
    98,720.70x = 4,093,434,081.36
  5. Step 5: Solve for x
    x = 4,093,434,081.36/98,720.70
  6. Step 6: Final answer
    x = 41,464.80

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