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Finding the Fourth Proportional to 75,424.88, 113,151.87 and 28,674.11

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Solution

The fourth proportional to 75,424.88, 113,151.87 and 28,674.11 is: 43,016.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,424.88 : 113,151.87 = 28,674.11 : x
  2. Step 2: Convert to fraction form
    75,424.88/113,151.87 = 28,674.11/x
  3. Step 3: Cross multiply
    75,424.88x = 113,151.87 × 28,674.11
  4. Step 4: Simplify right side
    75,424.88x = 3,244,528,601.33
  5. Step 5: Solve for x
    x = 3,244,528,601.33/75,424.88
  6. Step 6: Final answer
    x = 43,016.69

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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.