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Finding the Fourth Proportional to 110,990.80, 166,486.20 and 48,661.30

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Solution

The fourth proportional to 110,990.80, 166,486.20 and 48,661.30 is: 72,991.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,990.80 : 166,486.20 = 48,661.30 : x
  2. Step 2: Convert to fraction form
    110,990.80/166,486.20 = 48,661.30/x
  3. Step 3: Cross multiply
    110,990.80x = 166,486.20 × 48,661.30
  4. Step 4: Simplify right side
    110,990.80x = 8,101,434,924.06
  5. Step 5: Solve for x
    x = 8,101,434,924.06/110,990.80
  6. Step 6: Final answer
    x = 72,991.95

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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.