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Finding the Fourth Proportional to 212,469.56, 318,723.82 and 54,698.52

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Solution

The fourth proportional to 212,469.56, 318,723.82 and 54,698.52 is: 82,052.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    212,469.56 : 318,723.82 = 54,698.52 : x
  2. Step 2: Convert to fraction form
    212,469.56/318,723.82 = 54,698.52/x
  3. Step 3: Cross multiply
    212,469.56x = 318,723.82 × 54,698.52
  4. Step 4: Simplify right side
    212,469.56x = 17,433,721,242.75
  5. Step 5: Solve for x
    x = 17,433,721,242.75/212,469.56
  6. Step 6: Final answer
    x = 82,052.79

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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.