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Finding the Fourth Proportional to 186,676.80, 280,105.30 and 91,855.56

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Solution

The fourth proportional to 186,676.80, 280,105.30 and 91,855.56 is: 137,827.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,676.80 : 280,105.30 = 91,855.56 : x
  2. Step 2: Convert to fraction form
    186,676.80/280,105.30 = 91,855.56/x
  3. Step 3: Cross multiply
    186,676.80x = 280,105.30 × 91,855.56
  4. Step 4: Simplify right side
    186,676.80x = 25,729,229,190.47
  5. Step 5: Solve for x
    x = 25,729,229,190.47/186,676.80
  6. Step 6: Final answer
    x = 137,827.67

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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.