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Finding the Fourth Proportional to 57,771.20, 86,721.60 and 44,681.60

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Solution

The fourth proportional to 57,771.20, 86,721.60 and 44,681.60 is: 67,072.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,771.20 : 86,721.60 = 44,681.60 : x
  2. Step 2: Convert to fraction form
    57,771.20/86,721.60 = 44,681.60/x
  3. Step 3: Cross multiply
    57,771.20x = 86,721.60 × 44,681.60
  4. Step 4: Simplify right side
    57,771.20x = 3,874,859,842.56
  5. Step 5: Solve for x
    x = 3,874,859,842.56/57,771.20
  6. Step 6: Final answer
    x = 67,072.52

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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.