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Finding the Fourth Proportional to 422,713.32, 583,404.44 and 261,620.25

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Solution

The fourth proportional to 422,713.32, 583,404.44 and 261,620.25 is: 361,073.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,713.32 : 583,404.44 = 261,620.25 : x
  2. Step 2: Convert to fraction form
    422,713.32/583,404.44 = 261,620.25/x
  3. Step 3: Cross multiply
    422,713.32x = 583,404.44 × 261,620.25
  4. Step 4: Simplify right side
    422,713.32x = 152,630,414,135.81
  5. Step 5: Solve for x
    x = 152,630,414,135.81/422,713.32
  6. Step 6: Final answer
    x = 361,073.11

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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.