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Finding the Fourth Proportional to 20,461.68, 30,662.82 and 11,093.76

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Solution

The fourth proportional to 20,461.68, 30,662.82 and 11,093.76 is: 16,624.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,461.68 : 30,662.82 = 11,093.76 : x
  2. Step 2: Convert to fraction form
    20,461.68/30,662.82 = 11,093.76/x
  3. Step 3: Cross multiply
    20,461.68x = 30,662.82 × 11,093.76
  4. Step 4: Simplify right side
    20,461.68x = 340,165,966.00
  5. Step 5: Solve for x
    x = 340,165,966.00/20,461.68
  6. Step 6: Final answer
    x = 16,624.54

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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.