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Finding the Fourth Proportional to 74,572.88, 111,969.48 and 49,767.44

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Solution

The fourth proportional to 74,572.88, 111,969.48 and 49,767.44 is: 74,724.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,572.88 : 111,969.48 = 49,767.44 : x
  2. Step 2: Convert to fraction form
    74,572.88/111,969.48 = 49,767.44/x
  3. Step 3: Cross multiply
    74,572.88x = 111,969.48 × 49,767.44
  4. Step 4: Simplify right side
    74,572.88x = 5,572,434,377.73
  5. Step 5: Solve for x
    x = 5,572,434,377.73/74,572.88
  6. Step 6: Final answer
    x = 74,724.68

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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.