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Finding the Fourth Proportional to 17,311.70, 25,929.87 and 11,381.88

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Solution

The fourth proportional to 17,311.70, 25,929.87 and 11,381.88 is: 17,048.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,311.70 : 25,929.87 = 11,381.88 : x
  2. Step 2: Convert to fraction form
    17,311.70/25,929.87 = 11,381.88/x
  3. Step 3: Cross multiply
    17,311.70x = 25,929.87 × 11,381.88
  4. Step 4: Simplify right side
    17,311.70x = 295,130,668.76
  5. Step 5: Solve for x
    x = 295,130,668.76/17,311.70
  6. Step 6: Final answer
    x = 17,048.05

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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.