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Finding the Fourth Proportional to 143,881.75, 215,842.32 and 49,086.48

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Solution

The fourth proportional to 143,881.75, 215,842.32 and 49,086.48 is: 73,636.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    143,881.75 : 215,842.32 = 49,086.48 : x
  2. Step 2: Convert to fraction form
    143,881.75/215,842.32 = 49,086.48/x
  3. Step 3: Cross multiply
    143,881.75x = 215,842.32 × 49,086.48
  4. Step 4: Simplify right side
    143,881.75x = 10,594,940,533.24
  5. Step 5: Solve for x
    x = 10,594,940,533.24/143,881.75
  6. Step 6: Final answer
    x = 73,636.44

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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.