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Finding the Fourth Proportional to 18,754.26, 25,892.12 and 11,690.26

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Solution

The fourth proportional to 18,754.26, 25,892.12 and 11,690.26 is: 16,139.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,754.26 : 25,892.12 = 11,690.26 : x
  2. Step 2: Convert to fraction form
    18,754.26/25,892.12 = 11,690.26/x
  3. Step 3: Cross multiply
    18,754.26x = 25,892.12 × 11,690.26
  4. Step 4: Simplify right side
    18,754.26x = 302,685,614.75
  5. Step 5: Solve for x
    x = 302,685,614.75/18,754.26
  6. Step 6: Final answer
    x = 16,139.57

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.