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Finding the Fourth Proportional to 18,650.76, 25,738.86 and 10,693.74

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Solution

The fourth proportional to 18,650.76, 25,738.86 and 10,693.74 is: 14,757.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,650.76 : 25,738.86 = 10,693.74 : x
  2. Step 2: Convert to fraction form
    18,650.76/25,738.86 = 10,693.74/x
  3. Step 3: Cross multiply
    18,650.76x = 25,738.86 × 10,693.74
  4. Step 4: Simplify right side
    18,650.76x = 275,244,676.74
  5. Step 5: Solve for x
    x = 275,244,676.74/18,650.76
  6. Step 6: Final answer
    x = 14,757.83

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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.