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Finding the Fourth Proportional to 34,876.80, 48,129.46 and 18,961.11

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Solution

The fourth proportional to 34,876.80, 48,129.46 and 18,961.11 is: 26,166.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,876.80 : 48,129.46 = 18,961.11 : x
  2. Step 2: Convert to fraction form
    34,876.80/48,129.46 = 18,961.11/x
  3. Step 3: Cross multiply
    34,876.80x = 48,129.46 × 18,961.11
  4. Step 4: Simplify right side
    34,876.80x = 912,587,937.90
  5. Step 5: Solve for x
    x = 912,587,937.90/34,876.80
  6. Step 6: Final answer
    x = 26,166.05

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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.