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Finding the Fourth Proportional to 14,033.70, 20,947.80 and 12,372.99

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Solution

The fourth proportional to 14,033.70, 20,947.80 and 12,372.99 is: 18,468.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,033.70 : 20,947.80 = 12,372.99 : x
  2. Step 2: Convert to fraction form
    14,033.70/20,947.80 = 12,372.99/x
  3. Step 3: Cross multiply
    14,033.70x = 20,947.80 × 12,372.99
  4. Step 4: Simplify right side
    14,033.70x = 259,186,919.92
  5. Step 5: Solve for x
    x = 259,186,919.92/14,033.70
  6. Step 6: Final answer
    x = 18,468.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.