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Finding the Fourth Proportional to 84,308.94, 126,426.42 and 31,681.46

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Solution

The fourth proportional to 84,308.94, 126,426.42 and 31,681.46 is: 47,508.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,308.94 : 126,426.42 = 31,681.46 : x
  2. Step 2: Convert to fraction form
    84,308.94/126,426.42 = 31,681.46/x
  3. Step 3: Cross multiply
    84,308.94x = 126,426.42 × 31,681.46
  4. Step 4: Simplify right side
    84,308.94x = 4,005,373,568.17
  5. Step 5: Solve for x
    x = 4,005,373,568.17/84,308.94
  6. Step 6: Final answer
    x = 47,508.29

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