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Finding the Fourth Proportional to 66,791.12, 92,171.86 and 36,164.54

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Solution

The fourth proportional to 66,791.12, 92,171.86 and 36,164.54 is: 49,907.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,791.12 : 92,171.86 = 36,164.54 : x
  2. Step 2: Convert to fraction form
    66,791.12/92,171.86 = 36,164.54/x
  3. Step 3: Cross multiply
    66,791.12x = 92,171.86 × 36,164.54
  4. Step 4: Simplify right side
    66,791.12x = 3,333,353,057.86
  5. Step 5: Solve for x
    x = 3,333,353,057.86/66,791.12
  6. Step 6: Final answer
    x = 49,907.13

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1.5x scale

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.