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Finding the Fourth Proportional to 8,702.28, 13,028.58 and 5,774.76

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Solution

The fourth proportional to 8,702.28, 13,028.58 and 5,774.76 is: 8,645.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,702.28 : 13,028.58 = 5,774.76 : x
  2. Step 2: Convert to fraction form
    8,702.28/13,028.58 = 5,774.76/x
  3. Step 3: Cross multiply
    8,702.28x = 13,028.58 × 5,774.76
  4. Step 4: Simplify right side
    8,702.28x = 75,236,922.64
  5. Step 5: Solve for x
    x = 75,236,922.64/8,702.28
  6. Step 6: Final answer
    x = 8,645.66

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