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Finding the Fourth Proportional to 354,405.20, 531,424.20 and 105,054.80

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Solution

The fourth proportional to 354,405.20, 531,424.20 and 105,054.80 is: 157,527.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,405.20 : 531,424.20 = 105,054.80 : x
  2. Step 2: Convert to fraction form
    354,405.20/531,424.20 = 105,054.80/x
  3. Step 3: Cross multiply
    354,405.20x = 531,424.20 × 105,054.80
  4. Step 4: Simplify right side
    354,405.20x = 55,828,663,046.16
  5. Step 5: Solve for x
    x = 55,828,663,046.16/354,405.20
  6. Step 6: Final answer
    x = 157,527.78

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