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Finding the Fourth Proportional to 66,770.78, 92,143.70 and 36,558.02

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Solution

The fourth proportional to 66,770.78, 92,143.70 and 36,558.02 is: 50,450.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,770.78 : 92,143.70 = 36,558.02 : x
  2. Step 2: Convert to fraction form
    66,770.78/92,143.70 = 36,558.02/x
  3. Step 3: Cross multiply
    66,770.78x = 92,143.70 × 36,558.02
  4. Step 4: Simplify right side
    66,770.78x = 3,368,591,227.47
  5. Step 5: Solve for x
    x = 3,368,591,227.47/66,770.78
  6. Step 6: Final answer
    x = 50,450.08

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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.