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Finding the Fourth Proportional to 73,817.92, 110,718.20 and 20,513.96

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Solution

The fourth proportional to 73,817.92, 110,718.20 and 20,513.96 is: 30,768.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,817.92 : 110,718.20 = 20,513.96 : x
  2. Step 2: Convert to fraction form
    73,817.92/110,718.20 = 20,513.96/x
  3. Step 3: Cross multiply
    73,817.92x = 110,718.20 × 20,513.96
  4. Step 4: Simplify right side
    73,817.92x = 2,271,268,726.07
  5. Step 5: Solve for x
    x = 2,271,268,726.07/73,817.92
  6. Step 6: Final answer
    x = 30,768.53

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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.