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Finding the Fourth Proportional to 143,588.39, 198,170.55 and 82,358.46

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Solution

The fourth proportional to 143,588.39, 198,170.55 and 82,358.46 is: 113,665.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,588.39 : 198,170.55 = 82,358.46 : x
  2. Step 2: Convert to fraction form
    143,588.39/198,170.55 = 82,358.46/x
  3. Step 3: Cross multiply
    143,588.39x = 198,170.55 × 82,358.46
  4. Step 4: Simplify right side
    143,588.39x = 16,321,021,315.35
  5. Step 5: Solve for x
    x = 16,321,021,315.35/143,588.39
  6. Step 6: Final answer
    x = 113,665.33

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