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Finding the Fourth Proportional to 7,994.32, 11,975.34 and 4,865.14

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Solution

The fourth proportional to 7,994.32, 11,975.34 and 4,865.14 is: 7,287.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,994.32 : 11,975.34 = 4,865.14 : x
  2. Step 2: Convert to fraction form
    7,994.32/11,975.34 = 4,865.14/x
  3. Step 3: Cross multiply
    7,994.32x = 11,975.34 × 4,865.14
  4. Step 4: Simplify right side
    7,994.32x = 58,261,705.65
  5. Step 5: Solve for x
    x = 58,261,705.65/7,994.32
  6. Step 6: Final answer
    x = 7,287.89

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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.