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Finding the Fourth Proportional to 7,995.92, 11,981.72 and 5,065.34

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Solution

The fourth proportional to 7,995.92, 11,981.72 and 5,065.34 is: 7,590.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,995.92 : 11,981.72 = 5,065.34 : x
  2. Step 2: Convert to fraction form
    7,995.92/11,981.72 = 5,065.34/x
  3. Step 3: Cross multiply
    7,995.92x = 11,981.72 × 5,065.34
  4. Step 4: Simplify right side
    7,995.92x = 60,691,438.34
  5. Step 5: Solve for x
    x = 60,691,438.34/7,995.92
  6. Step 6: Final answer
    x = 7,590.31

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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.