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Finding the Fourth Proportional to 36,893.66, 55,346.58 and 11,939.99

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Solution

The fourth proportional to 36,893.66, 55,346.58 and 11,939.99 is: 17,911.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,893.66 : 55,346.58 = 11,939.99 : x
  2. Step 2: Convert to fraction form
    36,893.66/55,346.58 = 11,939.99/x
  3. Step 3: Cross multiply
    36,893.66x = 55,346.58 × 11,939.99
  4. Step 4: Simplify right side
    36,893.66x = 660,837,750.10
  5. Step 5: Solve for x
    x = 660,837,750.10/36,893.66
  6. Step 6: Final answer
    x = 17,911.96

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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.