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Finding the Fourth Proportional to 13,994.98, 20,934.79 and 12,763.24

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Solution

The fourth proportional to 13,994.98, 20,934.79 and 12,763.24 is: 19,092.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,994.98 : 20,934.79 = 12,763.24 : x
  2. Step 2: Convert to fraction form
    13,994.98/20,934.79 = 12,763.24/x
  3. Step 3: Cross multiply
    13,994.98x = 20,934.79 × 12,763.24
  4. Step 4: Simplify right side
    13,994.98x = 267,195,664.87
  5. Step 5: Solve for x
    x = 267,195,664.87/13,994.98
  6. Step 6: Final answer
    x = 19,092.25

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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.