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Finding the Fourth Proportional to 31,486.06, 43,451.05 and 17,339

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Solution

The fourth proportional to 31,486.06, 43,451.05 and 17,339 is: 23,927.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,486.06 : 43,451.05 = 17,339 : x
  2. Step 2: Convert to fraction form
    31,486.06/43,451.05 = 17,339/x
  3. Step 3: Cross multiply
    31,486.06x = 43,451.05 × 17,339
  4. Step 4: Simplify right side
    31,486.06x = 753,397,755.95
  5. Step 5: Solve for x
    x = 753,397,755.95/31,486.06
  6. Step 6: Final answer
    x = 23,927.98

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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.