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Finding the Fourth Proportional to 8,586.55, 12,874.56 and 3,653.38

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Solution

The fourth proportional to 8,586.55, 12,874.56 and 3,653.38 is: 5,477.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,586.55 : 12,874.56 = 3,653.38 : x
  2. Step 2: Convert to fraction form
    8,586.55/12,874.56 = 3,653.38/x
  3. Step 3: Cross multiply
    8,586.55x = 12,874.56 × 3,653.38
  4. Step 4: Simplify right side
    8,586.55x = 47,035,660.01
  5. Step 5: Solve for x
    x = 47,035,660.01/8,586.55
  6. Step 6: Final answer
    x = 5,477.83

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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.