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Finding the Fourth Proportional to 140,905.80, 211,358.70 and 123,409.80

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Solution

The fourth proportional to 140,905.80, 211,358.70 and 123,409.80 is: 185,114.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,905.80 : 211,358.70 = 123,409.80 : x
  2. Step 2: Convert to fraction form
    140,905.80/211,358.70 = 123,409.80/x
  3. Step 3: Cross multiply
    140,905.80x = 211,358.70 × 123,409.80
  4. Step 4: Simplify right side
    140,905.80x = 26,083,734,895.26
  5. Step 5: Solve for x
    x = 26,083,734,895.26/140,905.80
  6. Step 6: Final answer
    x = 185,114.70

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