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Finding the Fourth Proportional to 308,082.80, 462,124.20 and 86,466.80

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Solution

The fourth proportional to 308,082.80, 462,124.20 and 86,466.80 is: 129,700.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    308,082.80 : 462,124.20 = 86,466.80 : x
  2. Step 2: Convert to fraction form
    308,082.80/462,124.20 = 86,466.80/x
  3. Step 3: Cross multiply
    308,082.80x = 462,124.20 × 86,466.80
  4. Step 4: Simplify right side
    308,082.80x = 39,958,400,776.56
  5. Step 5: Solve for x
    x = 39,958,400,776.56/308,082.80
  6. Step 6: Final answer
    x = 129,700.20

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