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Finding the Fourth Proportional to 19,064.62, 28,600.52 and 7,221.94

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Solution

The fourth proportional to 19,064.62, 28,600.52 and 7,221.94 is: 10,834.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,064.62 : 28,600.52 = 7,221.94 : x
  2. Step 2: Convert to fraction form
    19,064.62/28,600.52 = 7,221.94/x
  3. Step 3: Cross multiply
    19,064.62x = 28,600.52 × 7,221.94
  4. Step 4: Simplify right side
    19,064.62x = 206,551,185.96
  5. Step 5: Solve for x
    x = 206,551,185.96/19,064.62
  6. Step 6: Final answer
    x = 10,834.27

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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.