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Finding the Fourth Proportional to 41,103.80, 61,655.70 and 28,662.20

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Solution

The fourth proportional to 41,103.80, 61,655.70 and 28,662.20 is: 42,993.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    41,103.80 : 61,655.70 = 28,662.20 : x
  2. Step 2: Convert to fraction form
    41,103.80/61,655.70 = 28,662.20/x
  3. Step 3: Cross multiply
    41,103.80x = 61,655.70 × 28,662.20
  4. Step 4: Simplify right side
    41,103.80x = 1,767,188,004.54
  5. Step 5: Solve for x
    x = 1,767,188,004.54/41,103.80
  6. Step 6: Final answer
    x = 42,993.30

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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.