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Finding the Fourth Proportional to 66,893.30, 92,311.44 and 36,678.68

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Solution

The fourth proportional to 66,893.30, 92,311.44 and 36,678.68 is: 50,615.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,893.30 : 92,311.44 = 36,678.68 : x
  2. Step 2: Convert to fraction form
    66,893.30/92,311.44 = 36,678.68/x
  3. Step 3: Cross multiply
    66,893.30x = 92,311.44 × 36,678.68
  4. Step 4: Simplify right side
    66,893.30x = 3,385,861,768.10
  5. Step 5: Solve for x
    x = 3,385,861,768.10/66,893.30
  6. Step 6: Final answer
    x = 50,615.86

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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.