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Finding the Fourth Proportional to 6,473.20, 9,688.20 and 4,529.20

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Solution

The fourth proportional to 6,473.20, 9,688.20 and 4,529.20 is: 6,778.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,473.20 : 9,688.20 = 4,529.20 : x
  2. Step 2: Convert to fraction form
    6,473.20/9,688.20 = 4,529.20/x
  3. Step 3: Cross multiply
    6,473.20x = 9,688.20 × 4,529.20
  4. Step 4: Simplify right side
    6,473.20x = 43,879,795.44
  5. Step 5: Solve for x
    x = 43,879,795.44/6,473.20
  6. Step 6: Final answer
    x = 6,778.69

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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.