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Finding the Fourth Proportional to 5,717.92, 7,890.60 and 3,360.12

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Solution

The fourth proportional to 5,717.92, 7,890.60 and 3,360.12 is: 4,636.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,717.92 : 7,890.60 = 3,360.12 : x
  2. Step 2: Convert to fraction form
    5,717.92/7,890.60 = 3,360.12/x
  3. Step 3: Cross multiply
    5,717.92x = 7,890.60 × 3,360.12
  4. Step 4: Simplify right side
    5,717.92x = 26,513,362.87
  5. Step 5: Solve for x
    x = 26,513,362.87/5,717.92
  6. Step 6: Final answer
    x = 4,636.89

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