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Finding the Fourth Proportional to 25,855.46, 35,679.60 and 15,800.72

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Solution

The fourth proportional to 25,855.46, 35,679.60 and 15,800.72 is: 21,804.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,855.46 : 35,679.60 = 15,800.72 : x
  2. Step 2: Convert to fraction form
    25,855.46/35,679.60 = 15,800.72/x
  3. Step 3: Cross multiply
    25,855.46x = 35,679.60 × 15,800.72
  4. Step 4: Simplify right side
    25,855.46x = 563,763,369.31
  5. Step 5: Solve for x
    x = 563,763,369.31/25,855.46
  6. Step 6: Final answer
    x = 21,804.42

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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.