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Finding the Fourth Proportional to 483,920.91, 725,408.33 and 217,748.43

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Solution

The fourth proportional to 483,920.91, 725,408.33 and 217,748.43 is: 326,409.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,920.91 : 725,408.33 = 217,748.43 : x
  2. Step 2: Convert to fraction form
    483,920.91/725,408.33 = 217,748.43/x
  3. Step 3: Cross multiply
    483,920.91x = 725,408.33 × 217,748.43
  4. Step 4: Simplify right side
    483,920.91x = 157,956,523,877.68
  5. Step 5: Solve for x
    x = 157,956,523,877.68/483,920.91
  6. Step 6: Final answer
    x = 326,409.79

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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.