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Finding the Fourth Proportional to 13,763.80, 20,653.80 and 4,999.60

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Solution

The fourth proportional to 13,763.80, 20,653.80 and 4,999.60 is: 7,502.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,763.80 : 20,653.80 = 4,999.60 : x
  2. Step 2: Convert to fraction form
    13,763.80/20,653.80 = 4,999.60/x
  3. Step 3: Cross multiply
    13,763.80x = 20,653.80 × 4,999.60
  4. Step 4: Simplify right side
    13,763.80x = 103,260,738.48
  5. Step 5: Solve for x
    x = 103,260,738.48/13,763.80
  6. Step 6: Final answer
    x = 7,502.34

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