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Finding the Fourth Proportional to 440,665.92, 661,003.20 and 174,491.28

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Solution

The fourth proportional to 440,665.92, 661,003.20 and 174,491.28 is: 261,738.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,665.92 : 661,003.20 = 174,491.28 : x
  2. Step 2: Convert to fraction form
    440,665.92/661,003.20 = 174,491.28/x
  3. Step 3: Cross multiply
    440,665.92x = 661,003.20 × 174,491.28
  4. Step 4: Simplify right side
    440,665.92x = 115,339,294,452.10
  5. Step 5: Solve for x
    x = 115,339,294,452.10/440,665.92
  6. Step 6: Final answer
    x = 261,738.63

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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.