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Finding the Fourth Proportional to 422,672.44, 583,347.72 and 261,579.40

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Solution

The fourth proportional to 422,672.44, 583,347.72 and 261,579.40 is: 361,016.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,672.44 : 583,347.72 = 261,579.40 : x
  2. Step 2: Convert to fraction form
    422,672.44/583,347.72 = 261,579.40/x
  3. Step 3: Cross multiply
    422,672.44x = 583,347.72 × 261,579.40
  4. Step 4: Simplify right side
    422,672.44x = 152,591,746,588.97
  5. Step 5: Solve for x
    x = 152,591,746,588.97/422,672.44
  6. Step 6: Final answer
    x = 361,016.55

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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.