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Finding the Fourth Proportional to 7,666.72, 11,489.28 and 3,496.48

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Solution

The fourth proportional to 7,666.72, 11,489.28 and 3,496.48 is: 5,239.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,666.72 : 11,489.28 = 3,496.48 : x
  2. Step 2: Convert to fraction form
    7,666.72/11,489.28 = 3,496.48/x
  3. Step 3: Cross multiply
    7,666.72x = 11,489.28 × 3,496.48
  4. Step 4: Simplify right side
    7,666.72x = 40,172,037.73
  5. Step 5: Solve for x
    x = 40,172,037.73/7,666.72
  6. Step 6: Final answer
    x = 5,239.79

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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.