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Finding the Fourth Proportional to 14,457.92, 21,663.41 and 7,428.18

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Solution

The fourth proportional to 14,457.92, 21,663.41 and 7,428.18 is: 11,130.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,457.92 : 21,663.41 = 7,428.18 : x
  2. Step 2: Convert to fraction form
    14,457.92/21,663.41 = 7,428.18/x
  3. Step 3: Cross multiply
    14,457.92x = 21,663.41 × 7,428.18
  4. Step 4: Simplify right side
    14,457.92x = 160,919,708.89
  5. Step 5: Solve for x
    x = 160,919,708.89/14,457.92
  6. Step 6: Final answer
    x = 11,130.21

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