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Finding the Fourth Proportional to 93,046.20, 139,601.70 and 40,471.80

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Solution

The fourth proportional to 93,046.20, 139,601.70 and 40,471.80 is: 60,721.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,046.20 : 139,601.70 = 40,471.80 : x
  2. Step 2: Convert to fraction form
    93,046.20/139,601.70 = 40,471.80/x
  3. Step 3: Cross multiply
    93,046.20x = 139,601.70 × 40,471.80
  4. Step 4: Simplify right side
    93,046.20x = 5,649,932,082.06
  5. Step 5: Solve for x
    x = 5,649,932,082.06/93,046.20
  6. Step 6: Final answer
    x = 60,721.79

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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.