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Finding the Fourth Proportional to 30,879.63, 46,381.43 and 18,423.96

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Solution

The fourth proportional to 30,879.63, 46,381.43 and 18,423.96 is: 27,672.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,879.63 : 46,381.43 = 18,423.96 : x
  2. Step 2: Convert to fraction form
    30,879.63/46,381.43 = 18,423.96/x
  3. Step 3: Cross multiply
    30,879.63x = 46,381.43 × 18,423.96
  4. Step 4: Simplify right side
    30,879.63x = 854,529,611.06
  5. Step 5: Solve for x
    x = 854,529,611.06/30,879.63
  6. Step 6: Final answer
    x = 27,672.92

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.