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Finding the Fourth Proportional to 48,921.60, 73,317.60 and 43,348.80

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Solution

The fourth proportional to 48,921.60, 73,317.60 and 43,348.80 is: 64,965.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,921.60 : 73,317.60 = 43,348.80 : x
  2. Step 2: Convert to fraction form
    48,921.60/73,317.60 = 43,348.80/x
  3. Step 3: Cross multiply
    48,921.60x = 73,317.60 × 43,348.80
  4. Step 4: Simplify right side
    48,921.60x = 3,178,229,978.88
  5. Step 5: Solve for x
    x = 3,178,229,978.88/48,921.60
  6. Step 6: Final answer
    x = 64,965.78

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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.