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Finding the Fourth Proportional to 313,003.44, 431,801.28 and 185,632.56

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Solution

The fourth proportional to 313,003.44, 431,801.28 and 185,632.56 is: 256,087.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,003.44 : 431,801.28 = 185,632.56 : x
  2. Step 2: Convert to fraction form
    313,003.44/431,801.28 = 185,632.56/x
  3. Step 3: Cross multiply
    313,003.44x = 431,801.28 × 185,632.56
  4. Step 4: Simplify right side
    313,003.44x = 80,156,377,017.68
  5. Step 5: Solve for x
    x = 80,156,377,017.68/313,003.44
  6. Step 6: Final answer
    x = 256,087.85

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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.