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Finding the Fourth Proportional to 114,578.80, 171,868.20 and 74,721.40

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Solution

The fourth proportional to 114,578.80, 171,868.20 and 74,721.40 is: 112,082.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,578.80 : 171,868.20 = 74,721.40 : x
  2. Step 2: Convert to fraction form
    114,578.80/171,868.20 = 74,721.40/x
  3. Step 3: Cross multiply
    114,578.80x = 171,868.20 × 74,721.40
  4. Step 4: Simplify right side
    114,578.80x = 12,842,232,519.48
  5. Step 5: Solve for x
    x = 12,842,232,519.48/114,578.80
  6. Step 6: Final answer
    x = 112,082.10

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