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Finding the Fourth Proportional to 18,803,289.62, 28,204,943.70 and 12,412,048.16

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Solution

The fourth proportional to 18,803,289.62, 28,204,943.70 and 12,412,048.16 is: 18,618,078.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,803,289.62 : 28,204,943.70 = 12,412,048.16 : x
  2. Step 2: Convert to fraction form
    18,803,289.62/28,204,943.70 = 12,412,048.16/x
  3. Step 3: Cross multiply
    18,803,289.62x = 28,204,943.70 × 12,412,048.16
  4. Step 4: Simplify right side
    18,803,289.62x = 350,081,119,554,488.56
  5. Step 5: Solve for x
    x = 350,081,119,554,488.56/18,803,289.62
  6. Step 6: Final answer
    x = 18,618,078.36

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