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Finding the Fourth Proportional to 11,472.68, 17,211.46 and 3,686.96

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Solution

The fourth proportional to 11,472.68, 17,211.46 and 3,686.96 is: 5,531.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,472.68 : 17,211.46 = 3,686.96 : x
  2. Step 2: Convert to fraction form
    11,472.68/17,211.46 = 3,686.96/x
  3. Step 3: Cross multiply
    11,472.68x = 17,211.46 × 3,686.96
  4. Step 4: Simplify right side
    11,472.68x = 63,457,964.56
  5. Step 5: Solve for x
    x = 63,457,964.56/11,472.68
  6. Step 6: Final answer
    x = 5,531.22

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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.