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Finding the Fourth Proportional to 33,128.60, 49,692.90 and 8,504.60

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Solution

The fourth proportional to 33,128.60, 49,692.90 and 8,504.60 is: 12,756.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,128.60 : 49,692.90 = 8,504.60 : x
  2. Step 2: Convert to fraction form
    33,128.60/49,692.90 = 8,504.60/x
  3. Step 3: Cross multiply
    33,128.60x = 49,692.90 × 8,504.60
  4. Step 4: Simplify right side
    33,128.60x = 422,618,237.34
  5. Step 5: Solve for x
    x = 422,618,237.34/33,128.60
  6. Step 6: Final answer
    x = 12,756.90

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.