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Finding the Fourth Proportional to 143,857.20, 215,766.90 and 44,027.40

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Solution

The fourth proportional to 143,857.20, 215,766.90 and 44,027.40 is: 66,035.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,857.20 : 215,766.90 = 44,027.40 : x
  2. Step 2: Convert to fraction form
    143,857.20/215,766.90 = 44,027.40/x
  3. Step 3: Cross multiply
    143,857.20x = 215,766.90 × 44,027.40
  4. Step 4: Simplify right side
    143,857.20x = 9,499,655,613.06
  5. Step 5: Solve for x
    x = 9,499,655,613.06/143,857.20
  6. Step 6: Final answer
    x = 66,035.32

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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.