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Finding the Fourth Proportional to 48,756.96, 73,120.95 and 20,676.60

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Solution

The fourth proportional to 48,756.96, 73,120.95 and 20,676.60 is: 31,008.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,756.96 : 73,120.95 = 20,676.60 : x
  2. Step 2: Convert to fraction form
    48,756.96/73,120.95 = 20,676.60/x
  3. Step 3: Cross multiply
    48,756.96x = 73,120.95 × 20,676.60
  4. Step 4: Simplify right side
    48,756.96x = 1,511,892,634.77
  5. Step 5: Solve for x
    x = 1,511,892,634.77/48,756.96
  6. Step 6: Final answer
    x = 31,008.76

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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.