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Finding the Fourth Proportional to 34,991.86, 48,285.26 and 19,676.78

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Solution

The fourth proportional to 34,991.86, 48,285.26 and 19,676.78 is: 27,151.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,991.86 : 48,285.26 = 19,676.78 : x
  2. Step 2: Convert to fraction form
    34,991.86/48,285.26 = 19,676.78/x
  3. Step 3: Cross multiply
    34,991.86x = 48,285.26 × 19,676.78
  4. Step 4: Simplify right side
    34,991.86x = 950,098,438.26
  5. Step 5: Solve for x
    x = 950,098,438.26/34,991.86
  6. Step 6: Final answer
    x = 27,151.98

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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.