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Finding the Fourth Proportional to 73,956.78, 110,949.75 and 21,366.72

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Solution

The fourth proportional to 73,956.78, 110,949.75 and 21,366.72 is: 32,054.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,956.78 : 110,949.75 = 21,366.72 : x
  2. Step 2: Convert to fraction form
    73,956.78/110,949.75 = 21,366.72/x
  3. Step 3: Cross multiply
    73,956.78x = 110,949.75 × 21,366.72
  4. Step 4: Simplify right side
    73,956.78x = 2,370,632,242.32
  5. Step 5: Solve for x
    x = 2,370,632,242.32/73,956.78
  6. Step 6: Final answer
    x = 32,054.29

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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.