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Finding the Fourth Proportional to 685,313.50, 945,601.41 and 443,562.52

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Solution

The fourth proportional to 685,313.50, 945,601.41 and 443,562.52 is: 612,031.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    685,313.50 : 945,601.41 = 443,562.52 : x
  2. Step 2: Convert to fraction form
    685,313.50/945,601.41 = 443,562.52/x
  3. Step 3: Cross multiply
    685,313.50x = 945,601.41 × 443,562.52
  4. Step 4: Simplify right side
    685,313.50x = 419,433,344,335.15
  5. Step 5: Solve for x
    x = 419,433,344,335.15/685,313.50
  6. Step 6: Final answer
    x = 612,031.35

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.