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Finding the Fourth Proportional to 323,816.65, 485,721.73 and 181,661.65

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Solution

The fourth proportional to 323,816.65, 485,721.73 and 181,661.65 is: 272,490.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,816.65 : 485,721.73 = 181,661.65 : x
  2. Step 2: Convert to fraction form
    323,816.65/485,721.73 = 181,661.65/x
  3. Step 3: Cross multiply
    323,816.65x = 485,721.73 × 181,661.65
  4. Step 4: Simplify right side
    323,816.65x = 88,237,010,912.65
  5. Step 5: Solve for x
    x = 88,237,010,912.65/323,816.65
  6. Step 6: Final answer
    x = 272,490.65

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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.