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Finding the Fourth Proportional to 99,704.58, 149,471.94 and 43,503.54

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Solution

The fourth proportional to 99,704.58, 149,471.94 and 43,503.54 is: 65,218.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,704.58 : 149,471.94 = 43,503.54 : x
  2. Step 2: Convert to fraction form
    99,704.58/149,471.94 = 43,503.54/x
  3. Step 3: Cross multiply
    99,704.58x = 149,471.94 × 43,503.54
  4. Step 4: Simplify right side
    99,704.58x = 6,502,558,520.67
  5. Step 5: Solve for x
    x = 6,502,558,520.67/99,704.58
  6. Step 6: Final answer
    x = 65,218.25

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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.