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Finding the Fourth Proportional to 72,731.49, 100,346.09 and 44,041.98

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Solution

The fourth proportional to 72,731.49, 100,346.09 and 44,041.98 is: 60,763.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,731.49 : 100,346.09 = 44,041.98 : x
  2. Step 2: Convert to fraction form
    72,731.49/100,346.09 = 44,041.98/x
  3. Step 3: Cross multiply
    72,731.49x = 100,346.09 × 44,041.98
  4. Step 4: Simplify right side
    72,731.49x = 4,419,440,328.24
  5. Step 5: Solve for x
    x = 4,419,440,328.24/72,731.49
  6. Step 6: Final answer
    x = 60,763.78

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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.