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Finding the Fourth Proportional to 440,930.52, 661,324.91 and 121,007.66

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Solution

The fourth proportional to 440,930.52, 661,324.91 and 121,007.66 is: 181,492.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    440,930.52 : 661,324.91 = 121,007.66 : x
  2. Step 2: Convert to fraction form
    440,930.52/661,324.91 = 121,007.66/x
  3. Step 3: Cross multiply
    440,930.52x = 661,324.91 × 121,007.66
  4. Step 4: Simplify right side
    440,930.52x = 80,025,375,947.15
  5. Step 5: Solve for x
    x = 80,025,375,947.15/440,930.52
  6. Step 6: Final answer
    x = 181,492.03

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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.