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Finding the Fourth Proportional to 19,168.18, 28,744.03 and 6,684.51

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Solution

The fourth proportional to 19,168.18, 28,744.03 and 6,684.51 is: 10,023.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,168.18 : 28,744.03 = 6,684.51 : x
  2. Step 2: Convert to fraction form
    19,168.18/28,744.03 = 6,684.51/x
  3. Step 3: Cross multiply
    19,168.18x = 28,744.03 × 6,684.51
  4. Step 4: Simplify right side
    19,168.18x = 192,139,710.44
  5. Step 5: Solve for x
    x = 192,139,710.44/19,168.18
  6. Step 6: Final answer
    x = 10,023.89

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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.