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Finding the Fourth Proportional to 11,154.78, 16,706.61 and 5,609.70

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Solution

The fourth proportional to 11,154.78, 16,706.61 and 5,609.70 is: 8,401.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,154.78 : 16,706.61 = 5,609.70 : x
  2. Step 2: Convert to fraction form
    11,154.78/16,706.61 = 5,609.70/x
  3. Step 3: Cross multiply
    11,154.78x = 16,706.61 × 5,609.70
  4. Step 4: Simplify right side
    11,154.78x = 93,719,070.12
  5. Step 5: Solve for x
    x = 93,719,070.12/11,154.78
  6. Step 6: Final answer
    x = 8,401.70

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