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Finding the Fourth Proportional to 66,589.20, 91,893.24 and 36,374.76

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Solution

The fourth proportional to 66,589.20, 91,893.24 and 36,374.76 is: 50,197.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,589.20 : 91,893.24 = 36,374.76 : x
  2. Step 2: Convert to fraction form
    66,589.20/91,893.24 = 36,374.76/x
  3. Step 3: Cross multiply
    66,589.20x = 91,893.24 × 36,374.76
  4. Step 4: Simplify right side
    66,589.20x = 3,342,594,550.62
  5. Step 5: Solve for x
    x = 3,342,594,550.62/66,589.20
  6. Step 6: Final answer
    x = 50,197.25

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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.