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Finding the Fourth Proportional to 17,257.80, 25,886.70 and 12,300.60

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Solution

The fourth proportional to 17,257.80, 25,886.70 and 12,300.60 is: 18,450.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,257.80 : 25,886.70 = 12,300.60 : x
  2. Step 2: Convert to fraction form
    17,257.80/25,886.70 = 12,300.60/x
  3. Step 3: Cross multiply
    17,257.80x = 25,886.70 × 12,300.60
  4. Step 4: Simplify right side
    17,257.80x = 318,421,942.02
  5. Step 5: Solve for x
    x = 318,421,942.02/17,257.80
  6. Step 6: Final answer
    x = 18,450.90

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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.