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Finding the Fourth Proportional to 75,161.89, 103,723.18 and 43,330.51

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Solution

The fourth proportional to 75,161.89, 103,723.18 and 43,330.51 is: 59,795.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,161.89 : 103,723.18 = 43,330.51 : x
  2. Step 2: Convert to fraction form
    75,161.89/103,723.18 = 43,330.51/x
  3. Step 3: Cross multiply
    75,161.89x = 103,723.18 × 43,330.51
  4. Step 4: Simplify right side
    75,161.89x = 4,494,378,288.22
  5. Step 5: Solve for x
    x = 4,494,378,288.22/75,161.89
  6. Step 6: Final answer
    x = 59,795.97

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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.