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Finding the Fourth Proportional to 7,216.68, 10,815.60 and 3,703.71

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Solution

The fourth proportional to 7,216.68, 10,815.60 and 3,703.71 is: 5,550.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,216.68 : 10,815.60 = 3,703.71 : x
  2. Step 2: Convert to fraction form
    7,216.68/10,815.60 = 3,703.71/x
  3. Step 3: Cross multiply
    7,216.68x = 10,815.60 × 3,703.71
  4. Step 4: Simplify right side
    7,216.68x = 40,057,845.88
  5. Step 5: Solve for x
    x = 40,057,845.88/7,216.68
  6. Step 6: Final answer
    x = 5,550.73

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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.