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Finding the Fourth Proportional to 13,915.63, 19,203.63 and 8,326.63

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Solution

The fourth proportional to 13,915.63, 19,203.63 and 8,326.63 is: 11,490.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,915.63 : 19,203.63 = 8,326.63 : x
  2. Step 2: Convert to fraction form
    13,915.63/19,203.63 = 8,326.63/x
  3. Step 3: Cross multiply
    13,915.63x = 19,203.63 × 8,326.63
  4. Step 4: Simplify right side
    13,915.63x = 159,901,425.65
  5. Step 5: Solve for x
    x = 159,901,425.65/13,915.63
  6. Step 6: Final answer
    x = 11,490.78

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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.