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Finding the Fourth Proportional to 111,687.96, 167,372.90 and 55,472.98

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Solution

The fourth proportional to 111,687.96, 167,372.90 and 55,472.98 is: 83,130.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,687.96 : 167,372.90 = 55,472.98 : x
  2. Step 2: Convert to fraction form
    111,687.96/167,372.90 = 55,472.98/x
  3. Step 3: Cross multiply
    111,687.96x = 167,372.90 × 55,472.98
  4. Step 4: Simplify right side
    111,687.96x = 9,284,673,534.24
  5. Step 5: Solve for x
    x = 9,284,673,534.24/111,687.96
  6. Step 6: Final answer
    x = 83,130.48

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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.