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Finding the Fourth Proportional to 168,879.30, 253,246.05 and 84,606.90

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Solution

The fourth proportional to 168,879.30, 253,246.05 and 84,606.90 is: 126,873.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,879.30 : 253,246.05 = 84,606.90 : x
  2. Step 2: Convert to fraction form
    168,879.30/253,246.05 = 84,606.90/x
  3. Step 3: Cross multiply
    168,879.30x = 253,246.05 × 84,606.90
  4. Step 4: Simplify right side
    168,879.30x = 21,426,363,227.75
  5. Step 5: Solve for x
    x = 21,426,363,227.75/168,879.30
  6. Step 6: Final answer
    x = 126,873.83

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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.