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Finding the Fourth Proportional to 48,609.42, 72,865.68 and 20,536.54

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Solution

The fourth proportional to 48,609.42, 72,865.68 and 20,536.54 is: 30,784.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,609.42 : 72,865.68 = 20,536.54 : x
  2. Step 2: Convert to fraction form
    48,609.42/72,865.68 = 20,536.54/x
  3. Step 3: Cross multiply
    48,609.42x = 72,865.68 × 20,536.54
  4. Step 4: Simplify right side
    48,609.42x = 1,496,408,692.77
  5. Step 5: Solve for x
    x = 1,496,408,692.77/48,609.42
  6. Step 6: Final answer
    x = 30,784.34

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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.