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Finding the Fourth Proportional to 5,611.59, 8,419.20 and 1,916.16

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Solution

The fourth proportional to 5,611.59, 8,419.20 and 1,916.16 is: 2,874.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,611.59 : 8,419.20 = 1,916.16 : x
  2. Step 2: Convert to fraction form
    5,611.59/8,419.20 = 1,916.16/x
  3. Step 3: Cross multiply
    5,611.59x = 8,419.20 × 1,916.16
  4. Step 4: Simplify right side
    5,611.59x = 16,132,534.27
  5. Step 5: Solve for x
    x = 16,132,534.27/5,611.59
  6. Step 6: Final answer
    x = 2,874.86

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