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Finding the Fourth Proportional to 77,048.80, 115,400.40 and 77,048.80

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Solution

The fourth proportional to 77,048.80, 115,400.40 and 77,048.80 is: 115,400.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,048.80 : 115,400.40 = 77,048.80 : x
  2. Step 2: Convert to fraction form
    77,048.80/115,400.40 = 77,048.80/x
  3. Step 3: Cross multiply
    77,048.80x = 115,400.40 × 77,048.80
  4. Step 4: Simplify right side
    77,048.80x = 8,891,462,339.52
  5. Step 5: Solve for x
    x = 8,891,462,339.52/77,048.80
  6. Step 6: Final answer
    x = 115,400.40

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