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Finding the Fourth Proportional to 188,676.87, 260,493.60 and 117,132.81

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Solution

The fourth proportional to 188,676.87, 260,493.60 and 117,132.81 is: 161,717.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,676.87 : 260,493.60 = 117,132.81 : x
  2. Step 2: Convert to fraction form
    188,676.87/260,493.60 = 117,132.81/x
  3. Step 3: Cross multiply
    188,676.87x = 260,493.60 × 117,132.81
  4. Step 4: Simplify right side
    188,676.87x = 30,512,347,355.02
  5. Step 5: Solve for x
    x = 30,512,347,355.02/188,676.87
  6. Step 6: Final answer
    x = 161,717.48

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.