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Finding the Fourth Proportional to 199,079.86, 274,727.86 and 108,435.53

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Solution

The fourth proportional to 199,079.86, 274,727.86 and 108,435.53 is: 149,639.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,079.86 : 274,727.86 = 108,435.53 : x
  2. Step 2: Convert to fraction form
    199,079.86/274,727.86 = 108,435.53/x
  3. Step 3: Cross multiply
    199,079.86x = 274,727.86 × 108,435.53
  4. Step 4: Simplify right side
    199,079.86x = 29,790,261,104.87
  5. Step 5: Solve for x
    x = 29,790,261,104.87/199,079.86
  6. Step 6: Final answer
    x = 149,639.75

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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.