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Finding the Fourth Proportional to 168,766.20, 252,857.70 and 142,522.20

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Solution

The fourth proportional to 168,766.20, 252,857.70 and 142,522.20 is: 213,537.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,766.20 : 252,857.70 = 142,522.20 : x
  2. Step 2: Convert to fraction form
    168,766.20/252,857.70 = 142,522.20/x
  3. Step 3: Cross multiply
    168,766.20x = 252,857.70 × 142,522.20
  4. Step 4: Simplify right side
    168,766.20x = 36,037,835,690.94
  5. Step 5: Solve for x
    x = 36,037,835,690.94/168,766.20
  6. Step 6: Final answer
    x = 213,537.05

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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.