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Finding the Fourth Proportional to 139,998.78, 193,193.51 and 79,568.37

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Solution

The fourth proportional to 139,998.78, 193,193.51 and 79,568.37 is: 109,801.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,998.78 : 193,193.51 = 79,568.37 : x
  2. Step 2: Convert to fraction form
    139,998.78/193,193.51 = 79,568.37/x
  3. Step 3: Cross multiply
    139,998.78x = 193,193.51 × 79,568.37
  4. Step 4: Simplify right side
    139,998.78x = 15,372,092,287.44
  5. Step 5: Solve for x
    x = 15,372,092,287.44/139,998.78
  6. Step 6: Final answer
    x = 109,801.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.