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Finding the Fourth Proportional to 48,928.88, 73,393.32 and 11,992.88

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Solution

The fourth proportional to 48,928.88, 73,393.32 and 11,992.88 is: 17,989.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,928.88 : 73,393.32 = 11,992.88 : x
  2. Step 2: Convert to fraction form
    48,928.88/73,393.32 = 11,992.88/x
  3. Step 3: Cross multiply
    48,928.88x = 73,393.32 × 11,992.88
  4. Step 4: Simplify right side
    48,928.88x = 880,196,912.60
  5. Step 5: Solve for x
    x = 880,196,912.60/48,928.88
  6. Step 6: Final answer
    x = 17,989.31

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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.