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Finding the Fourth Proportional to 55,865.59, 83,780.60 and 18,418.68

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Solution

The fourth proportional to 55,865.59, 83,780.60 and 18,418.68 is: 27,622.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,865.59 : 83,780.60 = 18,418.68 : x
  2. Step 2: Convert to fraction form
    55,865.59/83,780.60 = 18,418.68/x
  3. Step 3: Cross multiply
    55,865.59x = 83,780.60 × 18,418.68
  4. Step 4: Simplify right side
    55,865.59x = 1,543,127,969.51
  5. Step 5: Solve for x
    x = 1,543,127,969.51/55,865.59
  6. Step 6: Final answer
    x = 27,622.16

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