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Finding the Fourth Proportional to 236,115.90, 325,843.92 and 128,691.84

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Solution

The fourth proportional to 236,115.90, 325,843.92 and 128,691.84 is: 177,596.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,115.90 : 325,843.92 = 128,691.84 : x
  2. Step 2: Convert to fraction form
    236,115.90/325,843.92 = 128,691.84/x
  3. Step 3: Cross multiply
    236,115.90x = 325,843.92 × 128,691.84
  4. Step 4: Simplify right side
    236,115.90x = 41,933,453,617.61
  5. Step 5: Solve for x
    x = 41,933,453,617.61/236,115.90
  6. Step 6: Final answer
    x = 177,596.91

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1.5x scale

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.