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Finding the Fourth Proportional to 7,679.91, 11,500.41 and 4,749.33

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Solution

The fourth proportional to 7,679.91, 11,500.41 and 4,749.33 is: 7,111.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,679.91 : 11,500.41 = 4,749.33 : x
  2. Step 2: Convert to fraction form
    7,679.91/11,500.41 = 4,749.33/x
  3. Step 3: Cross multiply
    7,679.91x = 11,500.41 × 4,749.33
  4. Step 4: Simplify right side
    7,679.91x = 54,619,242.23
  5. Step 5: Solve for x
    x = 54,619,242.23/7,679.91
  6. Step 6: Final answer
    x = 7,111.96

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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.