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Finding the Fourth Proportional to 422,651.32, 583,318.62 and 261,558.25

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Solution

The fourth proportional to 422,651.32, 583,318.62 and 261,558.25 is: 360,987.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,651.32 : 583,318.62 = 261,558.25 : x
  2. Step 2: Convert to fraction form
    422,651.32/583,318.62 = 261,558.25/x
  3. Step 3: Cross multiply
    422,651.32x = 583,318.62 × 261,558.25
  4. Step 4: Simplify right side
    422,651.32x = 152,571,797,439.62
  5. Step 5: Solve for x
    x = 152,571,797,439.62/422,651.32
  6. Step 6: Final answer
    x = 360,987.39

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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.