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Finding the Fourth Proportional to 74,932.80, 112,399.20 and 65,716.80

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Solution

The fourth proportional to 74,932.80, 112,399.20 and 65,716.80 is: 98,575.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,932.80 : 112,399.20 = 65,716.80 : x
  2. Step 2: Convert to fraction form
    74,932.80/112,399.20 = 65,716.80/x
  3. Step 3: Cross multiply
    74,932.80x = 112,399.20 × 65,716.80
  4. Step 4: Simplify right side
    74,932.80x = 7,386,515,746.56
  5. Step 5: Solve for x
    x = 7,386,515,746.56/74,932.80
  6. Step 6: Final answer
    x = 98,575.20

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