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Finding the Fourth Proportional to 18,704.92, 28,050.09 and 7,011.76

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Solution

The fourth proportional to 18,704.92, 28,050.09 and 7,011.76 is: 10,514.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,704.92 : 28,050.09 = 7,011.76 : x
  2. Step 2: Convert to fraction form
    18,704.92/28,050.09 = 7,011.76/x
  3. Step 3: Cross multiply
    18,704.92x = 28,050.09 × 7,011.76
  4. Step 4: Simplify right side
    18,704.92x = 196,680,499.06
  5. Step 5: Solve for x
    x = 196,680,499.06/18,704.92
  6. Step 6: Final answer
    x = 10,514.91

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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.