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Finding the Fourth Proportional to 57,690.86, 79,568.61 and 36,462.38

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Solution

The fourth proportional to 57,690.86, 79,568.61 and 36,462.38 is: 50,289.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,690.86 : 79,568.61 = 36,462.38 : x
  2. Step 2: Convert to fraction form
    57,690.86/79,568.61 = 36,462.38/x
  3. Step 3: Cross multiply
    57,690.86x = 79,568.61 × 36,462.38
  4. Step 4: Simplify right side
    57,690.86x = 2,901,260,893.89
  5. Step 5: Solve for x
    x = 2,901,260,893.89/57,690.86
  6. Step 6: Final answer
    x = 50,289.78

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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.