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Finding the Fourth Proportional to 18,697.86, 28,048.96 and 7,604.76

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Solution

The fourth proportional to 18,697.86, 28,048.96 and 7,604.76 is: 11,408.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,697.86 : 28,048.96 = 7,604.76 : x
  2. Step 2: Convert to fraction form
    18,697.86/28,048.96 = 7,604.76/x
  3. Step 3: Cross multiply
    18,697.86x = 28,048.96 × 7,604.76
  4. Step 4: Simplify right side
    18,697.86x = 213,305,623.46
  5. Step 5: Solve for x
    x = 213,305,623.46/18,697.86
  6. Step 6: Final answer
    x = 11,408.02

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1.5x scale

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.