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Finding the Fourth Proportional to 80,620.79, 120,931.45 and 24,461.37

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Solution

The fourth proportional to 80,620.79, 120,931.45 and 24,461.37 is: 36,692.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,620.79 : 120,931.45 = 24,461.37 : x
  2. Step 2: Convert to fraction form
    80,620.79/120,931.45 = 24,461.37/x
  3. Step 3: Cross multiply
    80,620.79x = 120,931.45 × 24,461.37
  4. Step 4: Simplify right side
    80,620.79x = 2,958,148,516.01
  5. Step 5: Solve for x
    x = 2,958,148,516.01/80,620.79
  6. Step 6: Final answer
    x = 36,692.13

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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.