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Finding the Fourth Proportional to 6,894.72, 10,351.80 and 4,945.86

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Solution

The fourth proportional to 6,894.72, 10,351.80 and 4,945.86 is: 7,425.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,894.72 : 10,351.80 = 4,945.86 : x
  2. Step 2: Convert to fraction form
    6,894.72/10,351.80 = 4,945.86/x
  3. Step 3: Cross multiply
    6,894.72x = 10,351.80 × 4,945.86
  4. Step 4: Simplify right side
    6,894.72x = 51,198,553.55
  5. Step 5: Solve for x
    x = 51,198,553.55/6,894.72
  6. Step 6: Final answer
    x = 7,425.76

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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.