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Finding the Fourth Proportional to 26,111.40, 39,167.10 and 20,927.40

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Solution

The fourth proportional to 26,111.40, 39,167.10 and 20,927.40 is: 31,391.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,111.40 : 39,167.10 = 20,927.40 : x
  2. Step 2: Convert to fraction form
    26,111.40/39,167.10 = 20,927.40/x
  3. Step 3: Cross multiply
    26,111.40x = 39,167.10 × 20,927.40
  4. Step 4: Simplify right side
    26,111.40x = 819,665,568.54
  5. Step 5: Solve for x
    x = 819,665,568.54/26,111.40
  6. Step 6: Final answer
    x = 31,391.10

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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.