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Finding the Fourth Proportional to 272,939.99, 409,353.50 and 73,212.89

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Solution

The fourth proportional to 272,939.99, 409,353.50 and 73,212.89 is: 109,804.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,939.99 : 409,353.50 = 73,212.89 : x
  2. Step 2: Convert to fraction form
    272,939.99/409,353.50 = 73,212.89/x
  3. Step 3: Cross multiply
    272,939.99x = 409,353.50 × 73,212.89
  4. Step 4: Simplify right side
    272,939.99x = 29,969,950,353.78
  5. Step 5: Solve for x
    x = 29,969,950,353.78/272,939.99
  6. Step 6: Final answer
    x = 109,804.18

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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.