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Finding the Fourth Proportional to 45,359.98, 68,034.54 and 12,082.48

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Solution

The fourth proportional to 45,359.98, 68,034.54 and 12,082.48 is: 18,122.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,359.98 : 68,034.54 = 12,082.48 : x
  2. Step 2: Convert to fraction form
    45,359.98/68,034.54 = 12,082.48/x
  3. Step 3: Cross multiply
    45,359.98x = 68,034.54 × 12,082.48
  4. Step 4: Simplify right side
    45,359.98x = 822,025,968.86
  5. Step 5: Solve for x
    x = 822,025,968.86/45,359.98
  6. Step 6: Final answer
    x = 18,122.27

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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.