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Finding the Fourth Proportional to 143,879.10, 215,668.14 and 49,076.10

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Solution

The fourth proportional to 143,879.10, 215,668.14 and 49,076.10 is: 73,562.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,879.10 : 215,668.14 = 49,076.10 : x
  2. Step 2: Convert to fraction form
    143,879.10/215,668.14 = 49,076.10/x
  3. Step 3: Cross multiply
    143,879.10x = 215,668.14 × 49,076.10
  4. Step 4: Simplify right side
    143,879.10x = 10,584,151,205.45
  5. Step 5: Solve for x
    x = 10,584,151,205.45/143,879.10
  6. Step 6: Final answer
    x = 73,562.81

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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.