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Finding the Fourth Proportional to 20,557.91, 30,836.76 and 4,975.54

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Solution

The fourth proportional to 20,557.91, 30,836.76 and 4,975.54 is: 7,463.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,557.91 : 30,836.76 = 4,975.54 : x
  2. Step 2: Convert to fraction form
    20,557.91/30,836.76 = 4,975.54/x
  3. Step 3: Cross multiply
    20,557.91x = 30,836.76 × 4,975.54
  4. Step 4: Simplify right side
    20,557.91x = 153,429,532.85
  5. Step 5: Solve for x
    x = 153,429,532.85/20,557.91
  6. Step 6: Final answer
    x = 7,463.28

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