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Finding the Fourth Proportional to 43,312.81, 64,969.22 and 10,480.81

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Solution

The fourth proportional to 43,312.81, 64,969.22 and 10,480.81 is: 15,721.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,312.81 : 64,969.22 = 10,480.81 : x
  2. Step 2: Convert to fraction form
    43,312.81/64,969.22 = 10,480.81/x
  3. Step 3: Cross multiply
    43,312.81x = 64,969.22 × 10,480.81
  4. Step 4: Simplify right side
    43,312.81x = 680,930,050.67
  5. Step 5: Solve for x
    x = 680,930,050.67/43,312.81
  6. Step 6: Final answer
    x = 15,721.22

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