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Finding the Fourth Proportional to 104,136.05, 156,078.90 and 47,898.69

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Solution

The fourth proportional to 104,136.05, 156,078.90 and 47,898.69 is: 71,790.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,136.05 : 156,078.90 = 47,898.69 : x
  2. Step 2: Convert to fraction form
    104,136.05/156,078.90 = 47,898.69/x
  3. Step 3: Cross multiply
    104,136.05x = 156,078.90 × 47,898.69
  4. Step 4: Simplify right side
    104,136.05x = 7,475,974,846.64
  5. Step 5: Solve for x
    x = 7,475,974,846.64/104,136.05
  6. Step 6: Final answer
    x = 71,790.46

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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.