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Finding the Fourth Proportional to 26,978.74, 37,230.86 and 15,042.85

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Solution

The fourth proportional to 26,978.74, 37,230.86 and 15,042.85 is: 20,759.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,978.74 : 37,230.86 = 15,042.85 : x
  2. Step 2: Convert to fraction form
    26,978.74/37,230.86 = 15,042.85/x
  3. Step 3: Cross multiply
    26,978.74x = 37,230.86 × 15,042.85
  4. Step 4: Simplify right side
    26,978.74x = 560,057,980.98
  5. Step 5: Solve for x
    x = 560,057,980.98/26,978.74
  6. Step 6: Final answer
    x = 20,759.24

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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.