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Finding the Fourth Proportional to 13,473.99, 20,179.65 and 13,006.80

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Solution

The fourth proportional to 13,473.99, 20,179.65 and 13,006.80 is: 19,479.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,473.99 : 20,179.65 = 13,006.80 : x
  2. Step 2: Convert to fraction form
    13,473.99/20,179.65 = 13,006.80/x
  3. Step 3: Cross multiply
    13,473.99x = 20,179.65 × 13,006.80
  4. Step 4: Simplify right side
    13,473.99x = 262,472,671.62
  5. Step 5: Solve for x
    x = 262,472,671.62/13,473.99
  6. Step 6: Final answer
    x = 19,479.95

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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.