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Finding the Fourth Proportional to 167,899.50, 231,695.93 and 99,900.90

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Solution

The fourth proportional to 167,899.50, 231,695.93 and 99,900.90 is: 137,860.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,899.50 : 231,695.93 = 99,900.90 : x
  2. Step 2: Convert to fraction form
    167,899.50/231,695.93 = 99,900.90/x
  3. Step 3: Cross multiply
    167,899.50x = 231,695.93 × 99,900.90
  4. Step 4: Simplify right side
    167,899.50x = 23,146,632,183.09
  5. Step 5: Solve for x
    x = 23,146,632,183.09/167,899.50
  6. Step 6: Final answer
    x = 137,860.04

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.