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Finding the Fourth Proportional to 49,791.78, 74,673.60 and 19,792.56

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Solution

The fourth proportional to 49,791.78, 74,673.60 and 19,792.56 is: 29,683.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,791.78 : 74,673.60 = 19,792.56 : x
  2. Step 2: Convert to fraction form
    49,791.78/74,673.60 = 19,792.56/x
  3. Step 3: Cross multiply
    49,791.78x = 74,673.60 × 19,792.56
  4. Step 4: Simplify right side
    49,791.78x = 1,477,981,708.42
  5. Step 5: Solve for x
    x = 1,477,981,708.42/49,791.78
  6. Step 6: Final answer
    x = 29,683.25

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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.