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Finding the Fourth Proportional to 93,912.66, 140,163.44 and 81,206.19

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Solution

The fourth proportional to 93,912.66, 140,163.44 and 81,206.19 is: 121,199.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,912.66 : 140,163.44 = 81,206.19 : x
  2. Step 2: Convert to fraction form
    93,912.66/140,163.44 = 81,206.19/x
  3. Step 3: Cross multiply
    93,912.66x = 140,163.44 × 81,206.19
  4. Step 4: Simplify right side
    93,912.66x = 11,382,138,533.66
  5. Step 5: Solve for x
    x = 11,382,138,533.66/93,912.66
  6. Step 6: Final answer
    x = 121,199.19

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.