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Finding the Fourth Proportional to 443,393.76, 664,939.44 and 127,765.92

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Solution

The fourth proportional to 443,393.76, 664,939.44 and 127,765.92 is: 191,605.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,393.76 : 664,939.44 = 127,765.92 : x
  2. Step 2: Convert to fraction form
    443,393.76/664,939.44 = 127,765.92/x
  3. Step 3: Cross multiply
    443,393.76x = 664,939.44 × 127,765.92
  4. Step 4: Simplify right side
    443,393.76x = 84,956,599,295.88
  5. Step 5: Solve for x
    x = 84,956,599,295.88/443,393.76
  6. Step 6: Final answer
    x = 191,605.31

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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.