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Finding the Fourth Proportional to 321,993.96, 483,024.02 and 85,336.67

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Solution

The fourth proportional to 321,993.96, 483,024.02 and 85,336.67 is: 128,013.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    321,993.96 : 483,024.02 = 85,336.67 : x
  2. Step 2: Convert to fraction form
    321,993.96/483,024.02 = 85,336.67/x
  3. Step 3: Cross multiply
    321,993.96x = 483,024.02 × 85,336.67
  4. Step 4: Simplify right side
    321,993.96x = 41,219,658,555.01
  5. Step 5: Solve for x
    x = 41,219,658,555.01/321,993.96
  6. Step 6: Final answer
    x = 128,013.76

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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.