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Finding the Fourth Proportional to 104,638.86, 156,954.81 and 45,474.59

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Solution

The fourth proportional to 104,638.86, 156,954.81 and 45,474.59 is: 68,210.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,638.86 : 156,954.81 = 45,474.59 : x
  2. Step 2: Convert to fraction form
    104,638.86/156,954.81 = 45,474.59/x
  3. Step 3: Cross multiply
    104,638.86x = 156,954.81 × 45,474.59
  4. Step 4: Simplify right side
    104,638.86x = 7,137,455,633.28
  5. Step 5: Solve for x
    x = 7,137,455,633.28/104,638.86
  6. Step 6: Final answer
    x = 68,210.37

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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.