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Finding the Fourth Proportional to 17,709.90, 26,581.31 and 8,950.96

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Solution

The fourth proportional to 17,709.90, 26,581.31 and 8,950.96 is: 13,434.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,709.90 : 26,581.31 = 8,950.96 : x
  2. Step 2: Convert to fraction form
    17,709.90/26,581.31 = 8,950.96/x
  3. Step 3: Cross multiply
    17,709.90x = 26,581.31 × 8,950.96
  4. Step 4: Simplify right side
    17,709.90x = 237,928,242.56
  5. Step 5: Solve for x
    x = 237,928,242.56/17,709.90
  6. Step 6: Final answer
    x = 13,434.76

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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.