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Finding the Fourth Proportional to 27,163.60, 40,696.80 and 16,763.20

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Solution

The fourth proportional to 27,163.60, 40,696.80 and 16,763.20 is: 25,114.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,163.60 : 40,696.80 = 16,763.20 : x
  2. Step 2: Convert to fraction form
    27,163.60/40,696.80 = 16,763.20/x
  3. Step 3: Cross multiply
    27,163.60x = 40,696.80 × 16,763.20
  4. Step 4: Simplify right side
    27,163.60x = 682,208,597.76
  5. Step 5: Solve for x
    x = 682,208,597.76/27,163.60
  6. Step 6: Final answer
    x = 25,114.81

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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.