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Finding the Fourth Proportional to 270,061.92, 405,142.09 and 92,586.87

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Solution

The fourth proportional to 270,061.92, 405,142.09 and 92,586.87 is: 138,897.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,061.92 : 405,142.09 = 92,586.87 : x
  2. Step 2: Convert to fraction form
    270,061.92/405,142.09 = 92,586.87/x
  3. Step 3: Cross multiply
    270,061.92x = 405,142.09 × 92,586.87
  4. Step 4: Simplify right side
    270,061.92x = 37,510,837,786.89
  5. Step 5: Solve for x
    x = 37,510,837,786.89/270,061.92
  6. Step 6: Final answer
    x = 138,897.18

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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.