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Finding the Fourth Proportional to 14,687.70, 21,986.55 and 8,093.70

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Solution

The fourth proportional to 14,687.70, 21,986.55 and 8,093.70 is: 12,115.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,687.70 : 21,986.55 = 8,093.70 : x
  2. Step 2: Convert to fraction form
    14,687.70/21,986.55 = 8,093.70/x
  3. Step 3: Cross multiply
    14,687.70x = 21,986.55 × 8,093.70
  4. Step 4: Simplify right side
    14,687.70x = 177,952,539.74
  5. Step 5: Solve for x
    x = 177,952,539.74/14,687.70
  6. Step 6: Final answer
    x = 12,115.75

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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.