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Finding the Fourth Proportional to 422,805.46, 583,467.09 and 231,818.38

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Solution

The fourth proportional to 422,805.46, 583,467.09 and 231,818.38 is: 319,906.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,805.46 : 583,467.09 = 231,818.38 : x
  2. Step 2: Convert to fraction form
    422,805.46/583,467.09 = 231,818.38/x
  3. Step 3: Cross multiply
    422,805.46x = 583,467.09 × 231,818.38
  4. Step 4: Simplify right side
    422,805.46x = 135,258,395,587.11
  5. Step 5: Solve for x
    x = 135,258,395,587.11/422,805.46
  6. Step 6: Final answer
    x = 319,906.93

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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.