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Finding the Fourth Proportional to 143,863.60, 215,821.34 and 44,021.92

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Solution

The fourth proportional to 143,863.60, 215,821.34 and 44,021.92 is: 66,040.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,863.60 : 215,821.34 = 44,021.92 : x
  2. Step 2: Convert to fraction form
    143,863.60/215,821.34 = 44,021.92/x
  3. Step 3: Cross multiply
    143,863.60x = 215,821.34 × 44,021.92
  4. Step 4: Simplify right side
    143,863.60x = 9,500,869,763.77
  5. Step 5: Solve for x
    x = 9,500,869,763.77/143,863.60
  6. Step 6: Final answer
    x = 66,040.82

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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.