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Finding the Fourth Proportional to 8,861.64, 13,279.91 and 4,914.63

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Solution

The fourth proportional to 8,861.64, 13,279.91 and 4,914.63 is: 7,364.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,861.64 : 13,279.91 = 4,914.63 : x
  2. Step 2: Convert to fraction form
    8,861.64/13,279.91 = 4,914.63/x
  3. Step 3: Cross multiply
    8,861.64x = 13,279.91 × 4,914.63
  4. Step 4: Simplify right side
    8,861.64x = 65,265,844.08
  5. Step 5: Solve for x
    x = 65,265,844.08/8,861.64
  6. Step 6: Final answer
    x = 7,364.99

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