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Finding the Fourth Proportional to 11,015.76, 16,540.05 and 4,454.76

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Solution

The fourth proportional to 11,015.76, 16,540.05 and 4,454.76 is: 6,688.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,015.76 : 16,540.05 = 4,454.76 : x
  2. Step 2: Convert to fraction form
    11,015.76/16,540.05 = 4,454.76/x
  3. Step 3: Cross multiply
    11,015.76x = 16,540.05 × 4,454.76
  4. Step 4: Simplify right side
    11,015.76x = 73,682,006.81
  5. Step 5: Solve for x
    x = 73,682,006.81/11,015.76
  6. Step 6: Final answer
    x = 6,688.78

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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.