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Finding the Fourth Proportional to 36,911.88, 55,368.05 and 11,951.82

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Solution

The fourth proportional to 36,911.88, 55,368.05 and 11,951.82 is: 17,927.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,911.88 : 55,368.05 = 11,951.82 : x
  2. Step 2: Convert to fraction form
    36,911.88/55,368.05 = 11,951.82/x
  3. Step 3: Cross multiply
    36,911.88x = 55,368.05 × 11,951.82
  4. Step 4: Simplify right side
    36,911.88x = 661,748,907.59
  5. Step 5: Solve for x
    x = 661,748,907.59/36,911.88
  6. Step 6: Final answer
    x = 17,927.80

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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.