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Finding the Fourth Proportional to 90,769.51, 135,863.12 and 48,544.01

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Solution

The fourth proportional to 90,769.51, 135,863.12 and 48,544.01 is: 72,660.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,769.51 : 135,863.12 = 48,544.01 : x
  2. Step 2: Convert to fraction form
    90,769.51/135,863.12 = 48,544.01/x
  3. Step 3: Cross multiply
    90,769.51x = 135,863.12 × 48,544.01
  4. Step 4: Simplify right side
    90,769.51x = 6,595,340,607.44
  5. Step 5: Solve for x
    x = 6,595,340,607.44/90,769.51
  6. Step 6: Final answer
    x = 72,660.31

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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.