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Finding the Fourth Proportional to 75,203.89, 103,781.39 and 44,990.47

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Solution

The fourth proportional to 75,203.89, 103,781.39 and 44,990.47 is: 62,086.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,203.89 : 103,781.39 = 44,990.47 : x
  2. Step 2: Convert to fraction form
    75,203.89/103,781.39 = 44,990.47/x
  3. Step 3: Cross multiply
    75,203.89x = 103,781.39 × 44,990.47
  4. Step 4: Simplify right side
    75,203.89x = 4,669,173,513.35
  5. Step 5: Solve for x
    x = 4,669,173,513.35/75,203.89
  6. Step 6: Final answer
    x = 62,086.86

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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.