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Finding the Fourth Proportional to 19,209.52, 28,815.92 and 5,358.52

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Solution

The fourth proportional to 19,209.52, 28,815.92 and 5,358.52 is: 8,038.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,209.52 : 28,815.92 = 5,358.52 : x
  2. Step 2: Convert to fraction form
    19,209.52/28,815.92 = 5,358.52/x
  3. Step 3: Cross multiply
    19,209.52x = 28,815.92 × 5,358.52
  4. Step 4: Simplify right side
    19,209.52x = 154,410,683.64
  5. Step 5: Solve for x
    x = 154,410,683.64/19,209.52
  6. Step 6: Final answer
    x = 8,038.24

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