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Finding the Fourth Proportional to 332,638.92, 499,313.70 and 143,193.15

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Solution

The fourth proportional to 332,638.92, 499,313.70 and 143,193.15 is: 214,942.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    332,638.92 : 499,313.70 = 143,193.15 : x
  2. Step 2: Convert to fraction form
    332,638.92/499,313.70 = 143,193.15/x
  3. Step 3: Cross multiply
    332,638.92x = 499,313.70 × 143,193.15
  4. Step 4: Simplify right side
    332,638.92x = 71,498,301,541.16
  5. Step 5: Solve for x
    x = 71,498,301,541.16/332,638.92
  6. Step 6: Final answer
    x = 214,942.68

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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.