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Finding the Fourth Proportional to 12,994.92, 19,359.44 and 12,367.98

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Solution

The fourth proportional to 12,994.92, 19,359.44 and 12,367.98 is: 18,425.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,994.92 : 19,359.44 = 12,367.98 : x
  2. Step 2: Convert to fraction form
    12,994.92/19,359.44 = 12,367.98/x
  3. Step 3: Cross multiply
    12,994.92x = 19,359.44 × 12,367.98
  4. Step 4: Simplify right side
    12,994.92x = 239,437,104.89
  5. Step 5: Solve for x
    x = 239,437,104.89/12,994.92
  6. Step 6: Final answer
    x = 18,425.44

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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.