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Finding the Fourth Proportional to 332,939.72, 499,459.31 and 122,561.66

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Solution

The fourth proportional to 332,939.72, 499,459.31 and 122,561.66 is: 183,860.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    332,939.72 : 499,459.31 = 122,561.66 : x
  2. Step 2: Convert to fraction form
    332,939.72/499,459.31 = 122,561.66/x
  3. Step 3: Cross multiply
    332,939.72x = 499,459.31 × 122,561.66
  4. Step 4: Simplify right side
    332,939.72x = 61,214,562,136.05
  5. Step 5: Solve for x
    x = 61,214,562,136.05/332,939.72
  6. Step 6: Final answer
    x = 183,860.80

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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.