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Finding the Fourth Proportional to 66,035.75, 91,073.90 and 43,357.37

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Solution

The fourth proportional to 66,035.75, 91,073.90 and 43,357.37 is: 59,796.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,035.75 : 91,073.90 = 43,357.37 : x
  2. Step 2: Convert to fraction form
    66,035.75/91,073.90 = 43,357.37/x
  3. Step 3: Cross multiply
    66,035.75x = 91,073.90 × 43,357.37
  4. Step 4: Simplify right side
    66,035.75x = 3,948,724,107.49
  5. Step 5: Solve for x
    x = 3,948,724,107.49/66,035.75
  6. Step 6: Final answer
    x = 59,796.77

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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.