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Finding the Fourth Proportional to 8,248.58, 12,369.80 and 3,316.56

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Solution

The fourth proportional to 8,248.58, 12,369.80 and 3,316.56 is: 4,973.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,248.58 : 12,369.80 = 3,316.56 : x
  2. Step 2: Convert to fraction form
    8,248.58/12,369.80 = 3,316.56/x
  3. Step 3: Cross multiply
    8,248.58x = 12,369.80 × 3,316.56
  4. Step 4: Simplify right side
    8,248.58x = 41,025,183.89
  5. Step 5: Solve for x
    x = 41,025,183.89/8,248.58
  6. Step 6: Final answer
    x = 4,973.61

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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.