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Finding the Fourth Proportional to 43,067.80, 59,453.72 and 28,751.80

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Solution

The fourth proportional to 43,067.80, 59,453.72 and 28,751.80 is: 39,690.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,067.80 : 59,453.72 = 28,751.80 : x
  2. Step 2: Convert to fraction form
    43,067.80/59,453.72 = 28,751.80/x
  3. Step 3: Cross multiply
    43,067.80x = 59,453.72 × 28,751.80
  4. Step 4: Simplify right side
    43,067.80x = 1,709,401,466.70
  5. Step 5: Solve for x
    x = 1,709,401,466.70/43,067.80
  6. Step 6: Final answer
    x = 39,690.94

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.