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Finding the Fourth Proportional to 273,990.58, 411,026.77 and 84,435.19

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Solution

The fourth proportional to 273,990.58, 411,026.77 and 84,435.19 is: 126,665.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    273,990.58 : 411,026.77 = 84,435.19 : x
  2. Step 2: Convert to fraction form
    273,990.58/411,026.77 = 84,435.19/x
  3. Step 3: Cross multiply
    273,990.58x = 411,026.77 × 84,435.19
  4. Step 4: Simplify right side
    273,990.58x = 34,705,120,942.73
  5. Step 5: Solve for x
    x = 34,705,120,942.73/273,990.58
  6. Step 6: Final answer
    x = 126,665.38

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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.