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Finding the Fourth Proportional to 7,411.20, 11,095.20 and 7,195.20

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Solution

The fourth proportional to 7,411.20, 11,095.20 and 7,195.20 is: 10,771.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,411.20 : 11,095.20 = 7,195.20 : x
  2. Step 2: Convert to fraction form
    7,411.20/11,095.20 = 7,195.20/x
  3. Step 3: Cross multiply
    7,411.20x = 11,095.20 × 7,195.20
  4. Step 4: Simplify right side
    7,411.20x = 79,832,183.04
  5. Step 5: Solve for x
    x = 79,832,183.04/7,411.20
  6. Step 6: Final answer
    x = 10,771.83

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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.