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Finding the Fourth Proportional to 18,944.25, 26,143.20 and 10,446.69

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Solution

The fourth proportional to 18,944.25, 26,143.20 and 10,446.69 is: 14,416.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,944.25 : 26,143.20 = 10,446.69 : x
  2. Step 2: Convert to fraction form
    18,944.25/26,143.20 = 10,446.69/x
  3. Step 3: Cross multiply
    18,944.25x = 26,143.20 × 10,446.69
  4. Step 4: Simplify right side
    18,944.25x = 273,109,906.01
  5. Step 5: Solve for x
    x = 273,109,906.01/18,944.25
  6. Step 6: Final answer
    x = 14,416.51

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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.