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Finding the Fourth Proportional to 422,650.82, 583,317.93 and 261,557.75

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Solution

The fourth proportional to 422,650.82, 583,317.93 and 261,557.75 is: 360,986.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    422,650.82 : 583,317.93 = 261,557.75 : x
  2. Step 2: Convert to fraction form
    422,650.82/583,317.93 = 261,557.75/x
  3. Step 3: Cross multiply
    422,650.82x = 583,317.93 × 261,557.75
  4. Step 4: Simplify right side
    422,650.82x = 152,571,322,388.87
  5. Step 5: Solve for x
    x = 152,571,322,388.87/422,650.82
  6. Step 6: Final answer
    x = 360,986.70

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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.