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Finding the Fourth Proportional to 143,886.99, 215,850.21 and 49,091.73

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Solution

The fourth proportional to 143,886.99, 215,850.21 and 49,091.73 is: 73,644.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,886.99 : 215,850.21 = 49,091.73 : x
  2. Step 2: Convert to fraction form
    143,886.99/215,850.21 = 49,091.73/x
  3. Step 3: Cross multiply
    143,886.99x = 215,850.21 × 49,091.73
  4. Step 4: Simplify right side
    143,886.99x = 10,596,460,229.76
  5. Step 5: Solve for x
    x = 10,596,460,229.76/143,886.99
  6. Step 6: Final answer
    x = 73,644.32

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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.