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Finding the Fourth Proportional to 168,668.11, 253,043.68 and 118,845.51

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Solution

The fourth proportional to 168,668.11, 253,043.68 and 118,845.51 is: 178,297.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,668.11 : 253,043.68 = 118,845.51 : x
  2. Step 2: Convert to fraction form
    168,668.11/253,043.68 = 118,845.51/x
  3. Step 3: Cross multiply
    168,668.11x = 253,043.68 × 118,845.51
  4. Step 4: Simplify right side
    168,668.11x = 30,073,105,201.88
  5. Step 5: Solve for x
    x = 30,073,105,201.88/168,668.11
  6. Step 6: Final answer
    x = 178,297.52

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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.