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Finding the Fourth Proportional to 188,145.52, 259,640.92 and 107,574.64

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Solution

The fourth proportional to 188,145.52, 259,640.92 and 107,574.64 is: 148,453.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,145.52 : 259,640.92 = 107,574.64 : x
  2. Step 2: Convert to fraction form
    188,145.52/259,640.92 = 107,574.64/x
  3. Step 3: Cross multiply
    188,145.52x = 259,640.92 × 107,574.64
  4. Step 4: Simplify right side
    188,145.52x = 27,930,778,498.27
  5. Step 5: Solve for x
    x = 27,930,778,498.27/188,145.52
  6. Step 6: Final answer
    x = 148,453.06

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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.