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Finding the Fourth Proportional to 31,409.30, 43,344.51 and 17,068.84

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Solution

The fourth proportional to 31,409.30, 43,344.51 and 17,068.84 is: 23,554.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    31,409.30 : 43,344.51 = 17,068.84 : x
  2. Step 2: Convert to fraction form
    31,409.30/43,344.51 = 17,068.84/x
  3. Step 3: Cross multiply
    31,409.30x = 43,344.51 × 17,068.84
  4. Step 4: Simplify right side
    31,409.30x = 739,840,506.07
  5. Step 5: Solve for x
    x = 739,840,506.07/31,409.30
  6. Step 6: Final answer
    x = 23,554.82

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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.