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Finding the Fourth Proportional to 97,728.80, 146,593.20 and 45,240.80

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Solution

The fourth proportional to 97,728.80, 146,593.20 and 45,240.80 is: 67,861.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    97,728.80 : 146,593.20 = 45,240.80 : x
  2. Step 2: Convert to fraction form
    97,728.80/146,593.20 = 45,240.80/x
  3. Step 3: Cross multiply
    97,728.80x = 146,593.20 × 45,240.80
  4. Step 4: Simplify right side
    97,728.80x = 6,631,993,642.56
  5. Step 5: Solve for x
    x = 6,631,993,642.56/97,728.80
  6. Step 6: Final answer
    x = 67,861.20

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