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Finding the Fourth Proportional to 15,658.53, 21,608.61 and 8,584.94

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Solution

The fourth proportional to 15,658.53, 21,608.61 and 8,584.94 is: 11,847.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,658.53 : 21,608.61 = 8,584.94 : x
  2. Step 2: Convert to fraction form
    15,658.53/21,608.61 = 8,584.94/x
  3. Step 3: Cross multiply
    15,658.53x = 21,608.61 × 8,584.94
  4. Step 4: Simplify right side
    15,658.53x = 185,508,512.29
  5. Step 5: Solve for x
    x = 185,508,512.29/15,658.53
  6. Step 6: Final answer
    x = 11,847.12

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.