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Finding the Fourth Proportional to 104,171.68, 143,662.43 and 68,348.08

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Solution

The fourth proportional to 104,171.68, 143,662.43 and 68,348.08 is: 94,258.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,171.68 : 143,662.43 = 68,348.08 : x
  2. Step 2: Convert to fraction form
    104,171.68/143,662.43 = 68,348.08/x
  3. Step 3: Cross multiply
    104,171.68x = 143,662.43 × 68,348.08
  4. Step 4: Simplify right side
    104,171.68x = 9,819,051,258.63
  5. Step 5: Solve for x
    x = 9,819,051,258.63/104,171.68
  6. Step 6: Final answer
    x = 94,258.36

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.