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Finding the Fourth Proportional to 80,620.80, 120,931.49 and 24,461.39

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Solution

The fourth proportional to 80,620.80, 120,931.49 and 24,461.39 is: 36,692.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,620.80 : 120,931.49 = 24,461.39 : x
  2. Step 2: Convert to fraction form
    80,620.80/120,931.49 = 24,461.39/x
  3. Step 3: Cross multiply
    80,620.80x = 120,931.49 × 24,461.39
  4. Step 4: Simplify right side
    80,620.80x = 2,958,152,340.17
  5. Step 5: Solve for x
    x = 2,958,152,340.17/80,620.80
  6. Step 6: Final answer
    x = 36,692.17

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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.