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Finding the Fourth Proportional to 7,871.24, 11,794.97 and 4,747.77

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Solution

The fourth proportional to 7,871.24, 11,794.97 and 4,747.77 is: 7,114.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,871.24 : 11,794.97 = 4,747.77 : x
  2. Step 2: Convert to fraction form
    7,871.24/11,794.97 = 4,747.77/x
  3. Step 3: Cross multiply
    7,871.24x = 11,794.97 × 4,747.77
  4. Step 4: Simplify right side
    7,871.24x = 55,999,780.98
  5. Step 5: Solve for x
    x = 55,999,780.98/7,871.24
  6. Step 6: Final answer
    x = 7,114.48

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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.