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Finding the Fourth Proportional to 19,249.68, 28,868.04 and 5,395.44

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Solution

The fourth proportional to 19,249.68, 28,868.04 and 5,395.44 is: 8,091.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,249.68 : 28,868.04 = 5,395.44 : x
  2. Step 2: Convert to fraction form
    19,249.68/28,868.04 = 5,395.44/x
  3. Step 3: Cross multiply
    19,249.68x = 28,868.04 × 5,395.44
  4. Step 4: Simplify right side
    19,249.68x = 155,755,777.74
  5. Step 5: Solve for x
    x = 155,755,777.74/19,249.68
  6. Step 6: Final answer
    x = 8,091.34

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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.