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Finding the Fourth Proportional to 17,911.29, 26,857.68 and 8,042.12

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Solution

The fourth proportional to 17,911.29, 26,857.68 and 8,042.12 is: 12,059.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,911.29 : 26,857.68 = 8,042.12 : x
  2. Step 2: Convert to fraction form
    17,911.29/26,857.68 = 8,042.12/x
  3. Step 3: Cross multiply
    17,911.29x = 26,857.68 × 8,042.12
  4. Step 4: Simplify right side
    17,911.29x = 215,992,621.75
  5. Step 5: Solve for x
    x = 215,992,621.75/17,911.29
  6. Step 6: Final answer
    x = 12,059.02

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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.