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Finding the Fourth Proportional to 17,668.91, 26,492.98 and 7,139.27

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Solution

The fourth proportional to 17,668.91, 26,492.98 and 7,139.27 is: 10,704.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,668.91 : 26,492.98 = 7,139.27 : x
  2. Step 2: Convert to fraction form
    17,668.91/26,492.98 = 7,139.27/x
  3. Step 3: Cross multiply
    17,668.91x = 26,492.98 × 7,139.27
  4. Step 4: Simplify right side
    17,668.91x = 189,140,537.32
  5. Step 5: Solve for x
    x = 189,140,537.32/17,668.91
  6. Step 6: Final answer
    x = 10,704.71

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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.