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Finding the Fourth Proportional to 105,720.80, 158,581.20 and 53,232.80

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Solution

The fourth proportional to 105,720.80, 158,581.20 and 53,232.80 is: 79,849.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,720.80 : 158,581.20 = 53,232.80 : x
  2. Step 2: Convert to fraction form
    105,720.80/158,581.20 = 53,232.80/x
  3. Step 3: Cross multiply
    105,720.80x = 158,581.20 × 53,232.80
  4. Step 4: Simplify right side
    105,720.80x = 8,441,721,303.36
  5. Step 5: Solve for x
    x = 8,441,721,303.36/105,720.80
  6. Step 6: Final answer
    x = 79,849.20

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