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Finding the Fourth Proportional to 20,559.16, 30,838.63 and 4,976.79

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Solution

The fourth proportional to 20,559.16, 30,838.63 and 4,976.79 is: 7,465.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,559.16 : 30,838.63 = 4,976.79 : x
  2. Step 2: Convert to fraction form
    20,559.16/30,838.63 = 4,976.79/x
  3. Step 3: Cross multiply
    20,559.16x = 30,838.63 × 4,976.79
  4. Step 4: Simplify right side
    20,559.16x = 153,477,385.40
  5. Step 5: Solve for x
    x = 153,477,385.40/20,559.16
  6. Step 6: Final answer
    x = 7,465.16

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