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Finding the Fourth Proportional to 7,181.53, 9,908.09 and 4,195.67

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Solution

The fourth proportional to 7,181.53, 9,908.09 and 4,195.67 is: 5,788.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,181.53 : 9,908.09 = 4,195.67 : x
  2. Step 2: Convert to fraction form
    7,181.53/9,908.09 = 4,195.67/x
  3. Step 3: Cross multiply
    7,181.53x = 9,908.09 × 4,195.67
  4. Step 4: Simplify right side
    7,181.53x = 41,571,021.19
  5. Step 5: Solve for x
    x = 41,571,021.19/7,181.53
  6. Step 6: Final answer
    x = 5,788.60

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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.