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Finding the Fourth Proportional to 49,687.20, 74,530.80 and 41,230.80

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Solution

The fourth proportional to 49,687.20, 74,530.80 and 41,230.80 is: 61,846.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,687.20 : 74,530.80 = 41,230.80 : x
  2. Step 2: Convert to fraction form
    49,687.20/74,530.80 = 41,230.80/x
  3. Step 3: Cross multiply
    49,687.20x = 74,530.80 × 41,230.80
  4. Step 4: Simplify right side
    49,687.20x = 3,072,964,508.64
  5. Step 5: Solve for x
    x = 3,072,964,508.64/49,687.20
  6. Step 6: Final answer
    x = 61,846.20

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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.