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Finding the Fourth Proportional to 66,238.70, 99,558.79 and 43,825.83

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Solution

The fourth proportional to 66,238.70, 99,558.79 and 43,825.83 is: 65,871.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,238.70 : 99,558.79 = 43,825.83 : x
  2. Step 2: Convert to fraction form
    66,238.70/99,558.79 = 43,825.83/x
  3. Step 3: Cross multiply
    66,238.70x = 99,558.79 × 43,825.83
  4. Step 4: Simplify right side
    66,238.70x = 4,363,246,122.64
  5. Step 5: Solve for x
    x = 4,363,246,122.64/66,238.70
  6. Step 6: Final answer
    x = 65,871.55

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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.