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Finding the Fourth Proportional to 483,920.16, 725,407.20 and 217,747.68

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Solution

The fourth proportional to 483,920.16, 725,407.20 and 217,747.68 is: 326,408.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    483,920.16 : 725,407.20 = 217,747.68 : x
  2. Step 2: Convert to fraction form
    483,920.16/725,407.20 = 217,747.68/x
  3. Step 3: Cross multiply
    483,920.16x = 725,407.20 × 217,747.68
  4. Step 4: Simplify right side
    483,920.16x = 157,955,734,855.30
  5. Step 5: Solve for x
    x = 157,955,734,855.30/483,920.16
  6. Step 6: Final answer
    x = 326,408.67

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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.