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Finding the Fourth Proportional to 5,231.72, 7,212.72 and 4,482.44

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Solution

The fourth proportional to 5,231.72, 7,212.72 and 4,482.44 is: 6,179.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,231.72 : 7,212.72 = 4,482.44 : x
  2. Step 2: Convert to fraction form
    5,231.72/7,212.72 = 4,482.44/x
  3. Step 3: Cross multiply
    5,231.72x = 7,212.72 × 4,482.44
  4. Step 4: Simplify right side
    5,231.72x = 32,330,584.64
  5. Step 5: Solve for x
    x = 32,330,584.64/5,231.72
  6. Step 6: Final answer
    x = 6,179.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.