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Finding the Fourth Proportional to 42,020.55, 62,965.11 and 35,754.81

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Solution

The fourth proportional to 42,020.55, 62,965.11 and 35,754.81 is: 53,576.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,020.55 : 62,965.11 = 35,754.81 : x
  2. Step 2: Convert to fraction form
    42,020.55/62,965.11 = 35,754.81/x
  3. Step 3: Cross multiply
    42,020.55x = 62,965.11 × 35,754.81
  4. Step 4: Simplify right side
    42,020.55x = 2,251,305,544.68
  5. Step 5: Solve for x
    x = 2,251,305,544.68/42,020.55
  6. Step 6: Final answer
    x = 53,576.30

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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.