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Finding the Fourth Proportional to 77,993.13, 116,988.66 and 18,828.48

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Solution

The fourth proportional to 77,993.13, 116,988.66 and 18,828.48 is: 28,242.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,993.13 : 116,988.66 = 18,828.48 : x
  2. Step 2: Convert to fraction form
    77,993.13/116,988.66 = 18,828.48/x
  3. Step 3: Cross multiply
    77,993.13x = 116,988.66 × 18,828.48
  4. Step 4: Simplify right side
    77,993.13x = 2,202,718,645.04
  5. Step 5: Solve for x
    x = 2,202,718,645.04/77,993.13
  6. Step 6: Final answer
    x = 28,242.47

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