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Finding the Fourth Proportional to 49,072.60, 73,608.90 and 12,136.60

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Solution

The fourth proportional to 49,072.60, 73,608.90 and 12,136.60 is: 18,204.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,072.60 : 73,608.90 = 12,136.60 : x
  2. Step 2: Convert to fraction form
    49,072.60/73,608.90 = 12,136.60/x
  3. Step 3: Cross multiply
    49,072.60x = 73,608.90 × 12,136.60
  4. Step 4: Simplify right side
    49,072.60x = 893,361,775.74
  5. Step 5: Solve for x
    x = 893,361,775.74/49,072.60
  6. Step 6: Final answer
    x = 18,204.90

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1.5x scale

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.