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Finding the Fourth Proportional to 13,705.76, 20,553.80 and 4,938.32

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Solution

The fourth proportional to 13,705.76, 20,553.80 and 4,938.32 is: 7,405.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,705.76 : 20,553.80 = 4,938.32 : x
  2. Step 2: Convert to fraction form
    13,705.76/20,553.80 = 4,938.32/x
  3. Step 3: Cross multiply
    13,705.76x = 20,553.80 × 4,938.32
  4. Step 4: Simplify right side
    13,705.76x = 101,501,241.62
  5. Step 5: Solve for x
    x = 101,501,241.62/13,705.76
  6. Step 6: Final answer
    x = 7,405.74

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