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Finding the Fourth Proportional to 43,312.31, 64,968.47 and 10,480.31

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Solution

The fourth proportional to 43,312.31, 64,968.47 and 10,480.31 is: 15,720.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,312.31 : 64,968.47 = 10,480.31 : x
  2. Step 2: Convert to fraction form
    43,312.31/64,968.47 = 10,480.31/x
  3. Step 3: Cross multiply
    43,312.31x = 64,968.47 × 10,480.31
  4. Step 4: Simplify right side
    43,312.31x = 680,889,868.25
  5. Step 5: Solve for x
    x = 680,889,868.25/43,312.31
  6. Step 6: Final answer
    x = 15,720.47

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