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Finding the Fourth Proportional to 92,692.60, 139,067.70 and 36,539.80

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Solution

The fourth proportional to 92,692.60, 139,067.70 and 36,539.80 is: 54,821.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,692.60 : 139,067.70 = 36,539.80 : x
  2. Step 2: Convert to fraction form
    92,692.60/139,067.70 = 36,539.80/x
  3. Step 3: Cross multiply
    92,692.60x = 139,067.70 × 36,539.80
  4. Step 4: Simplify right side
    92,692.60x = 5,081,505,944.46
  5. Step 5: Solve for x
    x = 5,081,505,944.46/92,692.60
  6. Step 6: Final answer
    x = 54,821.05

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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.