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Finding the Fourth Proportional to 38,611.86, 57,857.80 and 18,599.80

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Solution

The fourth proportional to 38,611.86, 57,857.80 and 18,599.80 is: 27,870.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,611.86 : 57,857.80 = 18,599.80 : x
  2. Step 2: Convert to fraction form
    38,611.86/57,857.80 = 18,599.80/x
  3. Step 3: Cross multiply
    38,611.86x = 57,857.80 × 18,599.80
  4. Step 4: Simplify right side
    38,611.86x = 1,076,143,317.30
  5. Step 5: Solve for x
    x = 1,076,143,317.30/38,611.86
  6. Step 6: Final answer
    x = 27,870.80

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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.