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Finding the Fourth Proportional to 73,203.40, 109,724.10 and 28,815.40

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Solution

The fourth proportional to 73,203.40, 109,724.10 and 28,815.40 is: 43,191.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,203.40 : 109,724.10 = 28,815.40 : x
  2. Step 2: Convert to fraction form
    73,203.40/109,724.10 = 28,815.40/x
  3. Step 3: Cross multiply
    73,203.40x = 109,724.10 × 28,815.40
  4. Step 4: Simplify right side
    73,203.40x = 3,161,743,831.14
  5. Step 5: Solve for x
    x = 3,161,743,831.14/73,203.40
  6. Step 6: Final answer
    x = 43,191.22

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