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Finding the Fourth Proportional to 312,636.33, 431,446.16 and 191,844.37

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Solution

The fourth proportional to 312,636.33, 431,446.16 and 191,844.37 is: 264,750.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,636.33 : 431,446.16 = 191,844.37 : x
  2. Step 2: Convert to fraction form
    312,636.33/431,446.16 = 191,844.37/x
  3. Step 3: Cross multiply
    312,636.33x = 431,446.16 × 191,844.37
  4. Step 4: Simplify right side
    312,636.33x = 82,770,517,233.73
  5. Step 5: Solve for x
    x = 82,770,517,233.73/312,636.33
  6. Step 6: Final answer
    x = 264,750.15

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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.