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Finding the Fourth Proportional to 312,550.82, 431,232.60 and 196,276.82

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Solution

The fourth proportional to 312,550.82, 431,232.60 and 196,276.82 is: 270,807.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,550.82 : 431,232.60 = 196,276.82 : x
  2. Step 2: Convert to fraction form
    312,550.82/431,232.60 = 196,276.82/x
  3. Step 3: Cross multiply
    312,550.82x = 431,232.60 × 196,276.82
  4. Step 4: Simplify right side
    312,550.82x = 84,640,963,408.33
  5. Step 5: Solve for x
    x = 84,640,963,408.33/312,550.82
  6. Step 6: Final answer
    x = 270,807.04

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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.