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Finding the Fourth Proportional to 72,314.24, 99,782.16 and 40,484.48

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Solution

The fourth proportional to 72,314.24, 99,782.16 and 40,484.48 is: 55,862.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,314.24 : 99,782.16 = 40,484.48 : x
  2. Step 2: Convert to fraction form
    72,314.24/99,782.16 = 40,484.48/x
  3. Step 3: Cross multiply
    72,314.24x = 99,782.16 × 40,484.48
  4. Step 4: Simplify right side
    72,314.24x = 4,039,628,860.88
  5. Step 5: Solve for x
    x = 4,039,628,860.88/72,314.24
  6. Step 6: Final answer
    x = 55,862.15

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