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Finding the Fourth Proportional to 18,792.45, 28,188.46 and 5,644.26

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Solution

The fourth proportional to 18,792.45, 28,188.46 and 5,644.26 is: 8,466.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,792.45 : 28,188.46 = 5,644.26 : x
  2. Step 2: Convert to fraction form
    18,792.45/28,188.46 = 5,644.26/x
  3. Step 3: Cross multiply
    18,792.45x = 28,188.46 × 5,644.26
  4. Step 4: Simplify right side
    18,792.45x = 159,102,997.24
  5. Step 5: Solve for x
    x = 159,102,997.24/18,792.45
  6. Step 6: Final answer
    x = 8,466.33

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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.