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Finding the Fourth Proportional to 104,818.86, 157,190.22 and 45,640.26

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Solution

The fourth proportional to 104,818.86, 157,190.22 and 45,640.26 is: 68,443.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,818.86 : 157,190.22 = 45,640.26 : x
  2. Step 2: Convert to fraction form
    104,818.86/157,190.22 = 45,640.26/x
  3. Step 3: Cross multiply
    104,818.86x = 157,190.22 × 45,640.26
  4. Step 4: Simplify right side
    104,818.86x = 7,174,202,510.26
  5. Step 5: Solve for x
    x = 7,174,202,510.26/104,818.86
  6. Step 6: Final answer
    x = 68,443.81

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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.