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Finding the Fourth Proportional to 17,311.20, 25,986.24 and 6,930.24

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Solution

The fourth proportional to 17,311.20, 25,986.24 and 6,930.24 is: 10,403.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,311.20 : 25,986.24 = 6,930.24 : x
  2. Step 2: Convert to fraction form
    17,311.20/25,986.24 = 6,930.24/x
  3. Step 3: Cross multiply
    17,311.20x = 25,986.24 × 6,930.24
  4. Step 4: Simplify right side
    17,311.20x = 180,090,879.90
  5. Step 5: Solve for x
    x = 180,090,879.90/17,311.20
  6. Step 6: Final answer
    x = 10,403.14

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1.5x scale

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.