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Finding the Fourth Proportional to 18,902.92, 26,085.83 and 10,404.86

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Solution

The fourth proportional to 18,902.92, 26,085.83 and 10,404.86 is: 14,358.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,902.92 : 26,085.83 = 10,404.86 : x
  2. Step 2: Convert to fraction form
    18,902.92/26,085.83 = 10,404.86/x
  3. Step 3: Cross multiply
    18,902.92x = 26,085.83 × 10,404.86
  4. Step 4: Simplify right side
    18,902.92x = 271,419,357.11
  5. Step 5: Solve for x
    x = 271,419,357.11/18,902.92
  6. Step 6: Final answer
    x = 14,358.59

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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.