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Finding the Fourth Proportional to 39,212.80, 58,732.80 and 34,028.80

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Solution

The fourth proportional to 39,212.80, 58,732.80 and 34,028.80 is: 50,968.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,212.80 : 58,732.80 = 34,028.80 : x
  2. Step 2: Convert to fraction form
    39,212.80/58,732.80 = 34,028.80/x
  3. Step 3: Cross multiply
    39,212.80x = 58,732.80 × 34,028.80
  4. Step 4: Simplify right side
    39,212.80x = 1,998,606,704.64
  5. Step 5: Solve for x
    x = 1,998,606,704.64/39,212.80
  6. Step 6: Final answer
    x = 50,968.22

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1.5x scale

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.