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Finding the Fourth Proportional to 13,921.75, 19,212.11 and 7,548.37

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Solution

The fourth proportional to 13,921.75, 19,212.11 and 7,548.37 is: 10,416.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,921.75 : 19,212.11 = 7,548.37 : x
  2. Step 2: Convert to fraction form
    13,921.75/19,212.11 = 7,548.37/x
  3. Step 3: Cross multiply
    13,921.75x = 19,212.11 × 7,548.37
  4. Step 4: Simplify right side
    13,921.75x = 145,020,114.76
  5. Step 5: Solve for x
    x = 145,020,114.76/13,921.75
  6. Step 6: Final answer
    x = 10,416.80

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