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Finding the Fourth Proportional to 34,891.86, 48,149.76 and 18,976.56

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Solution

The fourth proportional to 34,891.86, 48,149.76 and 18,976.56 is: 26,187.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,891.86 : 48,149.76 = 18,976.56 : x
  2. Step 2: Convert to fraction form
    34,891.86/48,149.76 = 18,976.56/x
  3. Step 3: Cross multiply
    34,891.86x = 48,149.76 × 18,976.56
  4. Step 4: Simplify right side
    34,891.86x = 913,716,809.63
  5. Step 5: Solve for x
    x = 913,716,809.63/34,891.86
  6. Step 6: Final answer
    x = 26,187.11

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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.