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Finding the Fourth Proportional to 51,608.60, 71,223.90 and 28,952.68

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Solution

The fourth proportional to 51,608.60, 71,223.90 and 28,952.68 is: 39,956.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,608.60 : 71,223.90 = 28,952.68 : x
  2. Step 2: Convert to fraction form
    51,608.60/71,223.90 = 28,952.68/x
  3. Step 3: Cross multiply
    51,608.60x = 71,223.90 × 28,952.68
  4. Step 4: Simplify right side
    51,608.60x = 2,062,122,785.05
  5. Step 5: Solve for x
    x = 2,062,122,785.05/51,608.60
  6. Step 6: Final answer
    x = 39,956.96

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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.