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Finding the Fourth Proportional to 28,939, 43,408.46 and 19,006.44

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Solution

The fourth proportional to 28,939, 43,408.46 and 19,006.44 is: 28,509.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,939 : 43,408.46 = 19,006.44 : x
  2. Step 2: Convert to fraction form
    28,939/43,408.46 = 19,006.44/x
  3. Step 3: Cross multiply
    28,939x = 43,408.46 × 19,006.44
  4. Step 4: Simplify right side
    28,939x = 825,040,290.48
  5. Step 5: Solve for x
    x = 825,040,290.48/28,939
  6. Step 6: Final answer
    x = 28,509.63

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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.