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Finding the Fourth Proportional to 40,908.69, 61,363.11 and 11,326.61

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Solution

The fourth proportional to 40,908.69, 61,363.11 and 11,326.61 is: 16,989.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    40,908.69 : 61,363.11 = 11,326.61 : x
  2. Step 2: Convert to fraction form
    40,908.69/61,363.11 = 11,326.61/x
  3. Step 3: Cross multiply
    40,908.69x = 61,363.11 × 11,326.61
  4. Step 4: Simplify right side
    40,908.69x = 695,036,015.36
  5. Step 5: Solve for x
    x = 695,036,015.36/40,908.69
  6. Step 6: Final answer
    x = 16,989.94

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.