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Finding the Fourth Proportional to 49,400.70, 74,101.05 and 49,072.65

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Solution

The fourth proportional to 49,400.70, 74,101.05 and 49,072.65 is: 73,608.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,400.70 : 74,101.05 = 49,072.65 : x
  2. Step 2: Convert to fraction form
    49,400.70/74,101.05 = 49,072.65/x
  3. Step 3: Cross multiply
    49,400.70x = 74,101.05 × 49,072.65
  4. Step 4: Simplify right side
    49,400.70x = 3,636,334,891.28
  5. Step 5: Solve for x
    x = 3,636,334,891.28/49,400.70
  6. Step 6: Final answer
    x = 73,608.98

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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.