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Finding the Fourth Proportional to 18,593.94, 27,890.94 and 13,071.98

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Solution

The fourth proportional to 18,593.94, 27,890.94 and 13,071.98 is: 19,607.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,593.94 : 27,890.94 = 13,071.98 : x
  2. Step 2: Convert to fraction form
    18,593.94/27,890.94 = 13,071.98/x
  3. Step 3: Cross multiply
    18,593.94x = 27,890.94 × 13,071.98
  4. Step 4: Simplify right side
    18,593.94x = 364,589,809.86
  5. Step 5: Solve for x
    x = 364,589,809.86/18,593.94
  6. Step 6: Final answer
    x = 19,607.99

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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.