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Finding the Fourth Proportional to 110,668.80, 166,012.56 and 47,491.68

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Solution

The fourth proportional to 110,668.80, 166,012.56 and 47,491.68 is: 71,241.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,668.80 : 166,012.56 = 47,491.68 : x
  2. Step 2: Convert to fraction form
    110,668.80/166,012.56 = 47,491.68/x
  3. Step 3: Cross multiply
    110,668.80x = 166,012.56 × 47,491.68
  4. Step 4: Simplify right side
    110,668.80x = 7,884,215,375.50
  5. Step 5: Solve for x
    x = 7,884,215,375.50/110,668.80
  6. Step 6: Final answer
    x = 71,241.54

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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.