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Finding the Fourth Proportional to 422,661.48, 583,270.20 and 231,682.92

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Solution

The fourth proportional to 422,661.48, 583,270.20 and 231,682.92 is: 319,720.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,661.48 : 583,270.20 = 231,682.92 : x
  2. Step 2: Convert to fraction form
    422,661.48/583,270.20 = 231,682.92/x
  3. Step 3: Cross multiply
    422,661.48x = 583,270.20 × 231,682.92
  4. Step 4: Simplify right side
    422,661.48x = 135,133,743,084.98
  5. Step 5: Solve for x
    x = 135,133,743,084.98/422,661.48
  6. Step 6: Final answer
    x = 319,720.98

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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.