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Finding the Fourth Proportional to 17,431.60, 26,147.40 and 16,751.20

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Solution

The fourth proportional to 17,431.60, 26,147.40 and 16,751.20 is: 25,126.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,431.60 : 26,147.40 = 16,751.20 : x
  2. Step 2: Convert to fraction form
    17,431.60/26,147.40 = 16,751.20/x
  3. Step 3: Cross multiply
    17,431.60x = 26,147.40 × 16,751.20
  4. Step 4: Simplify right side
    17,431.60x = 438,000,326.88
  5. Step 5: Solve for x
    x = 438,000,326.88/17,431.60
  6. Step 6: Final answer
    x = 25,126.80

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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.