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Finding the Fourth Proportional to 422,679.52, 583,357.40 and 261,586.44

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Solution

The fourth proportional to 422,679.52, 583,357.40 and 261,586.44 is: 361,026.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,679.52 : 583,357.40 = 261,586.44 : x
  2. Step 2: Convert to fraction form
    422,679.52/583,357.40 = 261,586.44/x
  3. Step 3: Cross multiply
    422,679.52x = 583,357.40 × 261,586.44
  4. Step 4: Simplify right side
    422,679.52x = 152,598,385,513.66
  5. Step 5: Solve for x
    x = 152,598,385,513.66/422,679.52
  6. Step 6: Final answer
    x = 361,026.21

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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.