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Finding the Fourth Proportional to 48,393.75, 72,618.23 and 18,807.73

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Solution

The fourth proportional to 48,393.75, 72,618.23 and 18,807.73 is: 28,222.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,393.75 : 72,618.23 = 18,807.73 : x
  2. Step 2: Convert to fraction form
    48,393.75/72,618.23 = 18,807.73/x
  3. Step 3: Cross multiply
    48,393.75x = 72,618.23 × 18,807.73
  4. Step 4: Simplify right side
    48,393.75x = 1,365,784,062.92
  5. Step 5: Solve for x
    x = 1,365,784,062.92/48,393.75
  6. Step 6: Final answer
    x = 28,222.32

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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.