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Finding the Fourth Proportional to 312,233.78, 430,890.49 and 191,441.67

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Solution

The fourth proportional to 312,233.78, 430,890.49 and 191,441.67 is: 264,194.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,233.78 : 430,890.49 = 191,441.67 : x
  2. Step 2: Convert to fraction form
    312,233.78/430,890.49 = 191,441.67/x
  3. Step 3: Cross multiply
    312,233.78x = 430,890.49 × 191,441.67
  4. Step 4: Simplify right side
    312,233.78x = 82,490,394,992.72
  5. Step 5: Solve for x
    x = 82,490,394,992.72/312,233.78
  6. Step 6: Final answer
    x = 264,194.33

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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.