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Finding the Fourth Proportional to 28,885.60, 43,340.55 and 15,747.40

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Solution

The fourth proportional to 28,885.60, 43,340.55 and 15,747.40 is: 23,627.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,885.60 : 43,340.55 = 15,747.40 : x
  2. Step 2: Convert to fraction form
    28,885.60/43,340.55 = 15,747.40/x
  3. Step 3: Cross multiply
    28,885.60x = 43,340.55 × 15,747.40
  4. Step 4: Simplify right side
    28,885.60x = 682,500,977.07
  5. Step 5: Solve for x
    x = 682,500,977.07/28,885.60
  6. Step 6: Final answer
    x = 23,627.72

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