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Finding the Fourth Proportional to 53,435.80, 80,146.86 and 13,992.76

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Solution

The fourth proportional to 53,435.80, 80,146.86 and 13,992.76 is: 20,987.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,435.80 : 80,146.86 = 13,992.76 : x
  2. Step 2: Convert to fraction form
    53,435.80/80,146.86 = 13,992.76/x
  3. Step 3: Cross multiply
    53,435.80x = 80,146.86 × 13,992.76
  4. Step 4: Simplify right side
    53,435.80x = 1,121,475,776.73
  5. Step 5: Solve for x
    x = 1,121,475,776.73/53,435.80
  6. Step 6: Final answer
    x = 20,987.35

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