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Finding the Fourth Proportional to 89,203.91, 123,100.31 and 48,917.34

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Solution

The fourth proportional to 89,203.91, 123,100.31 and 48,917.34 is: 67,505.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,203.91 : 123,100.31 = 48,917.34 : x
  2. Step 2: Convert to fraction form
    89,203.91/123,100.31 = 48,917.34/x
  3. Step 3: Cross multiply
    89,203.91x = 123,100.31 × 48,917.34
  4. Step 4: Simplify right side
    89,203.91x = 6,021,739,473.79
  5. Step 5: Solve for x
    x = 6,021,739,473.79/89,203.91
  6. Step 6: Final answer
    x = 67,505.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.