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Finding the Fourth Proportional to 422,125.55, 582,527.46 and 231,138.92

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Solution

The fourth proportional to 422,125.55, 582,527.46 and 231,138.92 is: 318,968.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,125.55 : 582,527.46 = 231,138.92 : x
  2. Step 2: Convert to fraction form
    422,125.55/582,527.46 = 231,138.92/x
  3. Step 3: Cross multiply
    422,125.55x = 582,527.46 × 231,138.92
  4. Step 4: Simplify right side
    422,125.55x = 134,644,769,431.06
  5. Step 5: Solve for x
    x = 134,644,769,431.06/422,125.55
  6. Step 6: Final answer
    x = 318,968.54

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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.