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Finding the Fourth Proportional to 58,578.96, 87,850.28 and 21,134.18

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Solution

The fourth proportional to 58,578.96, 87,850.28 and 21,134.18 is: 31,694.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,578.96 : 87,850.28 = 21,134.18 : x
  2. Step 2: Convert to fraction form
    58,578.96/87,850.28 = 21,134.18/x
  3. Step 3: Cross multiply
    58,578.96x = 87,850.28 × 21,134.18
  4. Step 4: Simplify right side
    58,578.96x = 1,856,643,244.15
  5. Step 5: Solve for x
    x = 1,856,643,244.15/58,578.96
  6. Step 6: Final answer
    x = 31,694.71

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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.