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Finding the Fourth Proportional to 19,187.31, 26,478.53 and 11,122.52

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Solution

The fourth proportional to 19,187.31, 26,478.53 and 11,122.52 is: 15,349.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,187.31 : 26,478.53 = 11,122.52 : x
  2. Step 2: Convert to fraction form
    19,187.31/26,478.53 = 11,122.52/x
  3. Step 3: Cross multiply
    19,187.31x = 26,478.53 × 11,122.52
  4. Step 4: Simplify right side
    19,187.31x = 294,507,791.49
  5. Step 5: Solve for x
    x = 294,507,791.49/19,187.31
  6. Step 6: Final answer
    x = 15,349.10

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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.