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Finding the Fourth Proportional to 8,068.60, 12,093.90 and 3,136.60

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Solution

The fourth proportional to 8,068.60, 12,093.90 and 3,136.60 is: 4,701.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,068.60 : 12,093.90 = 3,136.60 : x
  2. Step 2: Convert to fraction form
    8,068.60/12,093.90 = 3,136.60/x
  3. Step 3: Cross multiply
    8,068.60x = 12,093.90 × 3,136.60
  4. Step 4: Simplify right side
    8,068.60x = 37,933,726.74
  5. Step 5: Solve for x
    x = 37,933,726.74/8,068.60
  6. Step 6: Final answer
    x = 4,701.40

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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.