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Finding the Fourth Proportional to 73,902.34, 110,855.88 and 28,921.92

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Solution

The fourth proportional to 73,902.34, 110,855.88 and 28,921.92 is: 43,383.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,902.34 : 110,855.88 = 28,921.92 : x
  2. Step 2: Convert to fraction form
    73,902.34/110,855.88 = 28,921.92/x
  3. Step 3: Cross multiply
    73,902.34x = 110,855.88 × 28,921.92
  4. Step 4: Simplify right side
    73,902.34x = 3,206,164,892.89
  5. Step 5: Solve for x
    x = 3,206,164,892.89/73,902.34
  6. Step 6: Final answer
    x = 43,383.81

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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.