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Finding the Fourth Proportional to 66,706.70, 100,052.61 and 16,786.80

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Solution

The fourth proportional to 66,706.70, 100,052.61 and 16,786.80 is: 25,178.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,706.70 : 100,052.61 = 16,786.80 : x
  2. Step 2: Convert to fraction form
    66,706.70/100,052.61 = 16,786.80/x
  3. Step 3: Cross multiply
    66,706.70x = 100,052.61 × 16,786.80
  4. Step 4: Simplify right side
    66,706.70x = 1,679,563,153.55
  5. Step 5: Solve for x
    x = 1,679,563,153.55/66,706.70
  6. Step 6: Final answer
    x = 25,178.33

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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.