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Finding the Fourth Proportional to 18,994.65, 28,493.60 and 4,956.54

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Solution

The fourth proportional to 18,994.65, 28,493.60 and 4,956.54 is: 7,435.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,994.65 : 28,493.60 = 4,956.54 : x
  2. Step 2: Convert to fraction form
    18,994.65/28,493.60 = 4,956.54/x
  3. Step 3: Cross multiply
    18,994.65x = 28,493.60 × 4,956.54
  4. Step 4: Simplify right side
    18,994.65x = 141,229,643.36
  5. Step 5: Solve for x
    x = 141,229,643.36/18,994.65
  6. Step 6: Final answer
    x = 7,435.23

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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.