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Finding the Fourth Proportional to 18,751.92, 28,096.28 and 11,333.76

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Solution

The fourth proportional to 18,751.92, 28,096.28 and 11,333.76 is: 16,981.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,751.92 : 28,096.28 = 11,333.76 : x
  2. Step 2: Convert to fraction form
    18,751.92/28,096.28 = 11,333.76/x
  3. Step 3: Cross multiply
    18,751.92x = 28,096.28 × 11,333.76
  4. Step 4: Simplify right side
    18,751.92x = 318,436,494.41
  5. Step 5: Solve for x
    x = 318,436,494.41/18,751.92
  6. Step 6: Final answer
    x = 16,981.54

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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.