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Finding the Fourth Proportional to 66,768.54, 92,140.60 and 36,555.78

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Solution

The fourth proportional to 66,768.54, 92,140.60 and 36,555.78 is: 50,446.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,768.54 : 92,140.60 = 36,555.78 : x
  2. Step 2: Convert to fraction form
    66,768.54/92,140.60 = 36,555.78/x
  3. Step 3: Cross multiply
    66,768.54x = 92,140.60 × 36,555.78
  4. Step 4: Simplify right side
    66,768.54x = 3,368,271,202.84
  5. Step 5: Solve for x
    x = 3,368,271,202.84/66,768.54
  6. Step 6: Final answer
    x = 50,446.98

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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.