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Finding the Fourth Proportional to 34,855.90, 48,101.19 and 18,940.54

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Solution

The fourth proportional to 34,855.90, 48,101.19 and 18,940.54 is: 26,137.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,855.90 : 48,101.19 = 18,940.54 : x
  2. Step 2: Convert to fraction form
    34,855.90/48,101.19 = 18,940.54/x
  3. Step 3: Cross multiply
    34,855.90x = 48,101.19 × 18,940.54
  4. Step 4: Simplify right side
    34,855.90x = 911,062,513.24
  5. Step 5: Solve for x
    x = 911,062,513.24/34,855.90
  6. Step 6: Final answer
    x = 26,137.97

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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.