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Finding the Fourth Proportional to 422,785.26, 583,449.39 and 231,798.24

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Solution

The fourth proportional to 422,785.26, 583,449.39 and 231,798.24 is: 319,884.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,785.26 : 583,449.39 = 231,798.24 : x
  2. Step 2: Convert to fraction form
    422,785.26/583,449.39 = 231,798.24/x
  3. Step 3: Cross multiply
    422,785.26x = 583,449.39 × 231,798.24
  4. Step 4: Simplify right side
    422,785.26x = 135,242,541,731.07
  5. Step 5: Solve for x
    x = 135,242,541,731.07/422,785.26
  6. Step 6: Final answer
    x = 319,884.71

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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.