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Finding the Fourth Proportional to 119,348.88, 178,861.92 and 45,436.56

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Solution

The fourth proportional to 119,348.88, 178,861.92 and 45,436.56 is: 68,093.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,348.88 : 178,861.92 = 45,436.56 : x
  2. Step 2: Convert to fraction form
    119,348.88/178,861.92 = 45,436.56/x
  3. Step 3: Cross multiply
    119,348.88x = 178,861.92 × 45,436.56
  4. Step 4: Simplify right side
    119,348.88x = 8,126,870,359.80
  5. Step 5: Solve for x
    x = 8,126,870,359.80/119,348.88
  6. Step 6: Final answer
    x = 68,093.39

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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.