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Finding the Fourth Proportional to 74,574.50, 102,912.83 and 41,040.50

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Solution

The fourth proportional to 74,574.50, 102,912.83 and 41,040.50 is: 56,635.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,574.50 : 102,912.83 = 41,040.50 : x
  2. Step 2: Convert to fraction form
    74,574.50/102,912.83 = 41,040.50/x
  3. Step 3: Cross multiply
    74,574.50x = 102,912.83 × 41,040.50
  4. Step 4: Simplify right side
    74,574.50x = 4,223,593,999.62
  5. Step 5: Solve for x
    x = 4,223,593,999.62/74,574.50
  6. Step 6: Final answer
    x = 56,635.90

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.