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Finding the Fourth Proportional to 188,664.72, 260,357.28 and 113,213.28

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Solution

The fourth proportional to 188,664.72, 260,357.28 and 113,213.28 is: 156,234.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,664.72 : 260,357.28 = 113,213.28 : x
  2. Step 2: Convert to fraction form
    188,664.72/260,357.28 = 113,213.28/x
  3. Step 3: Cross multiply
    188,664.72x = 260,357.28 × 113,213.28
  4. Step 4: Simplify right side
    188,664.72x = 29,475,901,640.68
  5. Step 5: Solve for x
    x = 29,475,901,640.68/188,664.72
  6. Step 6: Final answer
    x = 156,234.31

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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.