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Finding the Fourth Proportional to 66,733,861.20, 100,100,791.80 and 53,744,830.80

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Solution

The fourth proportional to 66,733,861.20, 100,100,791.80 and 53,744,830.80 is: 80,617,246.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,733,861.20 : 100,100,791.80 = 53,744,830.80 : x
  2. Step 2: Convert to fraction form
    66,733,861.20/100,100,791.80 = 53,744,830.80/x
  3. Step 3: Cross multiply
    66,733,861.20x = 100,100,791.80 × 53,744,830.80
  4. Step 4: Simplify right side
    66,733,861.20x = 5,379,900,118,237,027
  5. Step 5: Solve for x
    x = 5,379,900,118,237,027/66,733,861.20
  6. Step 6: Final answer
    x = 80,617,246.20

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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.