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Finding the Fourth Proportional to 73,956.20, 110,934.30 and 69,873.80

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Solution

The fourth proportional to 73,956.20, 110,934.30 and 69,873.80 is: 104,810.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,956.20 : 110,934.30 = 69,873.80 : x
  2. Step 2: Convert to fraction form
    73,956.20/110,934.30 = 69,873.80/x
  3. Step 3: Cross multiply
    73,956.20x = 110,934.30 × 69,873.80
  4. Step 4: Simplify right side
    73,956.20x = 7,751,401,091.34
  5. Step 5: Solve for x
    x = 7,751,401,091.34/73,956.20
  6. Step 6: Final answer
    x = 104,810.70

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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.