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Finding the Fourth Proportional to 61,668.72, 85,093.74 and 36,165.44

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Solution

The fourth proportional to 61,668.72, 85,093.74 and 36,165.44 is: 49,902.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,668.72 : 85,093.74 = 36,165.44 : x
  2. Step 2: Convert to fraction form
    61,668.72/85,093.74 = 36,165.44/x
  3. Step 3: Cross multiply
    61,668.72x = 85,093.74 × 36,165.44
  4. Step 4: Simplify right side
    61,668.72x = 3,077,452,548.35
  5. Step 5: Solve for x
    x = 3,077,452,548.35/61,668.72
  6. Step 6: Final answer
    x = 49,902.97

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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.