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Finding the Fourth Proportional to 19,076.88, 28,609.50 and 13,191.60

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Solution

The fourth proportional to 19,076.88, 28,609.50 and 13,191.60 is: 19,783.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,076.88 : 28,609.50 = 13,191.60 : x
  2. Step 2: Convert to fraction form
    19,076.88/28,609.50 = 13,191.60/x
  3. Step 3: Cross multiply
    19,076.88x = 28,609.50 × 13,191.60
  4. Step 4: Simplify right side
    19,076.88x = 377,405,080.20
  5. Step 5: Solve for x
    x = 377,405,080.20/19,076.88
  6. Step 6: Final answer
    x = 19,783.38

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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.