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Finding the Fourth Proportional to 18,676.92, 25,773.87 and 10,720.83

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Solution

The fourth proportional to 18,676.92, 25,773.87 and 10,720.83 is: 14,794.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,676.92 : 25,773.87 = 10,720.83 : x
  2. Step 2: Convert to fraction form
    18,676.92/25,773.87 = 10,720.83/x
  3. Step 3: Cross multiply
    18,676.92x = 25,773.87 × 10,720.83
  4. Step 4: Simplify right side
    18,676.92x = 276,317,278.71
  5. Step 5: Solve for x
    x = 276,317,278.71/18,676.92
  6. Step 6: Final answer
    x = 14,794.58

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.