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Finding the Fourth Proportional to 18,302.48, 25,257.40 and 9,918.98

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Solution

The fourth proportional to 18,302.48, 25,257.40 and 9,918.98 is: 13,688.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,302.48 : 25,257.40 = 9,918.98 : x
  2. Step 2: Convert to fraction form
    18,302.48/25,257.40 = 9,918.98/x
  3. Step 3: Cross multiply
    18,302.48x = 25,257.40 × 9,918.98
  4. Step 4: Simplify right side
    18,302.48x = 250,527,645.45
  5. Step 5: Solve for x
    x = 250,527,645.45/18,302.48
  6. Step 6: Final answer
    x = 13,688.18

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