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Finding the Fourth Proportional to 18,910.80, 26,094.64 and 10,951.92

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Solution

The fourth proportional to 18,910.80, 26,094.64 and 10,951.92 is: 15,112.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,910.80 : 26,094.64 = 10,951.92 : x
  2. Step 2: Convert to fraction form
    18,910.80/26,094.64 = 10,951.92/x
  3. Step 3: Cross multiply
    18,910.80x = 26,094.64 × 10,951.92
  4. Step 4: Simplify right side
    18,910.80x = 285,786,409.71
  5. Step 5: Solve for x
    x = 285,786,409.71/18,910.80
  6. Step 6: Final answer
    x = 15,112.34

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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.