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Finding the Fourth Proportional to 25,409.89, 38,107.95 and 10,615.71

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Solution

The fourth proportional to 25,409.89, 38,107.95 and 10,615.71 is: 15,920.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,409.89 : 38,107.95 = 10,615.71 : x
  2. Step 2: Convert to fraction form
    25,409.89/38,107.95 = 10,615.71/x
  3. Step 3: Cross multiply
    25,409.89x = 38,107.95 × 10,615.71
  4. Step 4: Simplify right side
    25,409.89x = 404,542,945.89
  5. Step 5: Solve for x
    x = 404,542,945.89/25,409.89
  6. Step 6: Final answer
    x = 15,920.69

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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.