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Finding the Fourth Proportional to 27,390.65, 41,092.92 and 7,669.31

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Solution

The fourth proportional to 27,390.65, 41,092.92 and 7,669.31 is: 11,505.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,390.65 : 41,092.92 = 7,669.31 : x
  2. Step 2: Convert to fraction form
    27,390.65/41,092.92 = 7,669.31/x
  3. Step 3: Cross multiply
    27,390.65x = 41,092.92 × 7,669.31
  4. Step 4: Simplify right side
    27,390.65x = 315,154,136.82
  5. Step 5: Solve for x
    x = 315,154,136.82/27,390.65
  6. Step 6: Final answer
    x = 11,505.90

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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.