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Finding the Fourth Proportional to 13,882.05, 19,158.53 and 7,912.53

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Solution

The fourth proportional to 13,882.05, 19,158.53 and 7,912.53 is: 10,920.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,882.05 : 19,158.53 = 7,912.53 : x
  2. Step 2: Convert to fraction form
    13,882.05/19,158.53 = 7,912.53/x
  3. Step 3: Cross multiply
    13,882.05x = 19,158.53 × 7,912.53
  4. Step 4: Simplify right side
    13,882.05x = 151,592,403.82
  5. Step 5: Solve for x
    x = 151,592,403.82/13,882.05
  6. Step 6: Final answer
    x = 10,920.03

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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.