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Finding the Fourth Proportional to 326,863.72, 489,899.74 and 231,944.68

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Solution

The fourth proportional to 326,863.72, 489,899.74 and 231,944.68 is: 347,636.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    326,863.72 : 489,899.74 = 231,944.68 : x
  2. Step 2: Convert to fraction form
    326,863.72/489,899.74 = 231,944.68/x
  3. Step 3: Cross multiply
    326,863.72x = 489,899.74 × 231,944.68
  4. Step 4: Simplify right side
    326,863.72x = 113,629,638,426.38
  5. Step 5: Solve for x
    x = 113,629,638,426.38/326,863.72
  6. Step 6: Final answer
    x = 347,636.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.