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Finding the Fourth Proportional to 18,975.44, 28,477.68 and 8,594.48

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Solution

The fourth proportional to 18,975.44, 28,477.68 and 8,594.48 is: 12,898.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,975.44 : 28,477.68 = 8,594.48 : x
  2. Step 2: Convert to fraction form
    18,975.44/28,477.68 = 8,594.48/x
  3. Step 3: Cross multiply
    18,975.44x = 28,477.68 × 8,594.48
  4. Step 4: Simplify right side
    18,975.44x = 244,750,851.21
  5. Step 5: Solve for x
    x = 244,750,851.21/18,975.44
  6. Step 6: Final answer
    x = 12,898.30

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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.