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Finding the Fourth Proportional to 113,530, 156,676.26 and 63,229

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Solution

The fourth proportional to 113,530, 156,676.26 and 63,229 is: 87,258.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,530 : 156,676.26 = 63,229 : x
  2. Step 2: Convert to fraction form
    113,530/156,676.26 = 63,229/x
  3. Step 3: Cross multiply
    113,530x = 156,676.26 × 63,229
  4. Step 4: Simplify right side
    113,530x = 9,906,483,243.54
  5. Step 5: Solve for x
    x = 9,906,483,243.54/113,530
  6. Step 6: Final answer
    x = 87,258.73

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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.