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Finding the Fourth Proportional to 13,905.66, 19,185.99 and 7,935.18

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Solution

The fourth proportional to 13,905.66, 19,185.99 and 7,935.18 is: 10,948.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,905.66 : 19,185.99 = 7,935.18 : x
  2. Step 2: Convert to fraction form
    13,905.66/19,185.99 = 7,935.18/x
  3. Step 3: Cross multiply
    13,905.66x = 19,185.99 × 7,935.18
  4. Step 4: Simplify right side
    13,905.66x = 152,244,284.13
  5. Step 5: Solve for x
    x = 152,244,284.13/13,905.66
  6. Step 6: Final answer
    x = 10,948.37

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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.