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Finding the Fourth Proportional to 93,286.68, 139,943.85 and 30,086.02

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Solution

The fourth proportional to 93,286.68, 139,943.85 and 30,086.02 is: 45,133.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,286.68 : 139,943.85 = 30,086.02 : x
  2. Step 2: Convert to fraction form
    93,286.68/139,943.85 = 30,086.02/x
  3. Step 3: Cross multiply
    93,286.68x = 139,943.85 × 30,086.02
  4. Step 4: Simplify right side
    93,286.68x = 4,210,353,469.98
  5. Step 5: Solve for x
    x = 4,210,353,469.98/93,286.68
  6. Step 6: Final answer
    x = 45,133.49

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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.