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Finding the Fourth Proportional to 167,821.80, 251,732.70 and 57,013.80

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Solution

The fourth proportional to 167,821.80, 251,732.70 and 57,013.80 is: 85,520.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,821.80 : 251,732.70 = 57,013.80 : x
  2. Step 2: Convert to fraction form
    167,821.80/251,732.70 = 57,013.80/x
  3. Step 3: Cross multiply
    167,821.80x = 251,732.70 × 57,013.80
  4. Step 4: Simplify right side
    167,821.80x = 14,352,237,811.26
  5. Step 5: Solve for x
    x = 14,352,237,811.26/167,821.80
  6. Step 6: Final answer
    x = 85,520.70

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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.