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Finding the Fourth Proportional to 6,659,771.22, 9,985,611.45 and 2,611,408.98

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Solution

The fourth proportional to 6,659,771.22, 9,985,611.45 and 2,611,408.98 is: 3,915,527.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,659,771.22 : 9,985,611.45 = 2,611,408.98 : x
  2. Step 2: Convert to fraction form
    6,659,771.22/9,985,611.45 = 2,611,408.98/x
  3. Step 3: Cross multiply
    6,659,771.22x = 9,985,611.45 × 2,611,408.98
  4. Step 4: Simplify right side
    6,659,771.22x = 26,076,515,411,320.82
  5. Step 5: Solve for x
    x = 26,076,515,411,320.82/6,659,771.22
  6. Step 6: Final answer
    x = 3,915,527.21

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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.