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Finding the Fourth Proportional to 109,953.80, 164,909.10 and 36,081.80

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Solution

The fourth proportional to 109,953.80, 164,909.10 and 36,081.80 is: 54,115.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,953.80 : 164,909.10 = 36,081.80 : x
  2. Step 2: Convert to fraction form
    109,953.80/164,909.10 = 36,081.80/x
  3. Step 3: Cross multiply
    109,953.80x = 164,909.10 × 36,081.80
  4. Step 4: Simplify right side
    109,953.80x = 5,950,217,164.38
  5. Step 5: Solve for x
    x = 5,950,217,164.38/109,953.80
  6. Step 6: Final answer
    x = 54,115.61

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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.