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Finding the Fourth Proportional to 17,811.97, 26,708.08 and 7,289.38

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Solution

The fourth proportional to 17,811.97, 26,708.08 and 7,289.38 is: 10,930.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,811.97 : 26,708.08 = 7,289.38 : x
  2. Step 2: Convert to fraction form
    17,811.97/26,708.08 = 7,289.38/x
  3. Step 3: Cross multiply
    17,811.97x = 26,708.08 × 7,289.38
  4. Step 4: Simplify right side
    17,811.97x = 194,685,344.19
  5. Step 5: Solve for x
    x = 194,685,344.19/17,811.97
  6. Step 6: Final answer
    x = 10,930.03

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.