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Finding the Fourth Proportional to 18,611.85, 25,684.44 and 10,114.02

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Solution

The fourth proportional to 18,611.85, 25,684.44 and 10,114.02 is: 13,957.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,611.85 : 25,684.44 = 10,114.02 : x
  2. Step 2: Convert to fraction form
    18,611.85/25,684.44 = 10,114.02/x
  3. Step 3: Cross multiply
    18,611.85x = 25,684.44 × 10,114.02
  4. Step 4: Simplify right side
    18,611.85x = 259,772,939.85
  5. Step 5: Solve for x
    x = 259,772,939.85/18,611.85
  6. Step 6: Final answer
    x = 13,957.39

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.