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Finding the Fourth Proportional to 13,788.48, 19,028.25 and 7,500.90

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Solution

The fourth proportional to 13,788.48, 19,028.25 and 7,500.90 is: 10,351.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,788.48 : 19,028.25 = 7,500.90 : x
  2. Step 2: Convert to fraction form
    13,788.48/19,028.25 = 7,500.90/x
  3. Step 3: Cross multiply
    13,788.48x = 19,028.25 × 7,500.90
  4. Step 4: Simplify right side
    13,788.48x = 142,729,000.43
  5. Step 5: Solve for x
    x = 142,729,000.43/13,788.48
  6. Step 6: Final answer
    x = 10,351.32

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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.