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Finding the Fourth Proportional to 12,631.88, 17,431.74 and 7,326.56

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Solution

The fourth proportional to 12,631.88, 17,431.74 and 7,326.56 is: 10,110.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,631.88 : 17,431.74 = 7,326.56 : x
  2. Step 2: Convert to fraction form
    12,631.88/17,431.74 = 7,326.56/x
  3. Step 3: Cross multiply
    12,631.88x = 17,431.74 × 7,326.56
  4. Step 4: Simplify right side
    12,631.88x = 127,714,689.01
  5. Step 5: Solve for x
    x = 127,714,689.01/12,631.88
  6. Step 6: Final answer
    x = 10,110.51

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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.