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Finding the Fourth Proportional to 10,996.70, 16,481.55 and 7,486.70

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Solution

The fourth proportional to 10,996.70, 16,481.55 and 7,486.70 is: 11,220.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,996.70 : 16,481.55 = 7,486.70 : x
  2. Step 2: Convert to fraction form
    10,996.70/16,481.55 = 7,486.70/x
  3. Step 3: Cross multiply
    10,996.70x = 16,481.55 × 7,486.70
  4. Step 4: Simplify right side
    10,996.70x = 123,392,420.39
  5. Step 5: Solve for x
    x = 123,392,420.39/10,996.70
  6. Step 6: Final answer
    x = 11,220.86

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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.