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Finding the Fourth Proportional to 8,136,893.70, 12,200,905.80 and 2,456,379.90

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Solution

The fourth proportional to 8,136,893.70, 12,200,905.80 and 2,456,379.90 is: 3,683,231.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,136,893.70 : 12,200,905.80 = 2,456,379.90 : x
  2. Step 2: Convert to fraction form
    8,136,893.70/12,200,905.80 = 2,456,379.90/x
  3. Step 3: Cross multiply
    8,136,893.70x = 12,200,905.80 × 2,456,379.90
  4. Step 4: Simplify right side
    8,136,893.70x = 29,970,059,768,913.42
  5. Step 5: Solve for x
    x = 29,970,059,768,913.42/8,136,893.70
  6. Step 6: Final answer
    x = 3,683,231.08

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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.