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Finding the Fourth Proportional to 93,956.65, 140,934.97 and 81,268.70

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Solution

The fourth proportional to 93,956.65, 140,934.97 and 81,268.70 is: 121,903.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,956.65 : 140,934.97 = 81,268.70 : x
  2. Step 2: Convert to fraction form
    93,956.65/140,934.97 = 81,268.70/x
  3. Step 3: Cross multiply
    93,956.65x = 140,934.97 × 81,268.70
  4. Step 4: Simplify right side
    93,956.65x = 11,453,601,796.44
  5. Step 5: Solve for x
    x = 11,453,601,796.44/93,956.65
  6. Step 6: Final answer
    x = 121,903.05

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.