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Finding the Fourth Proportional to 66,818.78, 92,208.75 and 36,604.70

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Solution

The fourth proportional to 66,818.78, 92,208.75 and 36,604.70 is: 50,513.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,818.78 : 92,208.75 = 36,604.70 : x
  2. Step 2: Convert to fraction form
    66,818.78/92,208.75 = 36,604.70/x
  3. Step 3: Cross multiply
    66,818.78x = 92,208.75 × 36,604.70
  4. Step 4: Simplify right side
    66,818.78x = 3,375,273,631.13
  5. Step 5: Solve for x
    x = 3,375,273,631.13/66,818.78
  6. Step 6: Final answer
    x = 50,513.85

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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.