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Finding the Fourth Proportional to 8,794.72, 12,136.88 and 4,815.80

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Solution

The fourth proportional to 8,794.72, 12,136.88 and 4,815.80 is: 6,645.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,794.72 : 12,136.88 = 4,815.80 : x
  2. Step 2: Convert to fraction form
    8,794.72/12,136.88 = 4,815.80/x
  3. Step 3: Cross multiply
    8,794.72x = 12,136.88 × 4,815.80
  4. Step 4: Simplify right side
    8,794.72x = 58,448,786.70
  5. Step 5: Solve for x
    x = 58,448,786.70/8,794.72
  6. Step 6: Final answer
    x = 6,645.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.