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Finding the Fourth Proportional to 72,334.66, 99,755.22 and 49,633.60

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Solution

The fourth proportional to 72,334.66, 99,755.22 and 49,633.60 is: 68,448.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,334.66 : 99,755.22 = 49,633.60 : x
  2. Step 2: Convert to fraction form
    72,334.66/99,755.22 = 49,633.60/x
  3. Step 3: Cross multiply
    72,334.66x = 99,755.22 × 49,633.60
  4. Step 4: Simplify right side
    72,334.66x = 4,951,210,687.39
  5. Step 5: Solve for x
    x = 4,951,210,687.39/72,334.66
  6. Step 6: Final answer
    x = 68,448.66

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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.