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Finding the Fourth Proportional to 19,173, 28,762.38 and 6,863.88

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Solution

The fourth proportional to 19,173, 28,762.38 and 6,863.88 is: 10,296.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,173 : 28,762.38 = 6,863.88 : x
  2. Step 2: Convert to fraction form
    19,173/28,762.38 = 6,863.88/x
  3. Step 3: Cross multiply
    19,173x = 28,762.38 × 6,863.88
  4. Step 4: Simplify right side
    19,173x = 197,421,524.83
  5. Step 5: Solve for x
    x = 197,421,524.83/19,173
  6. Step 6: Final answer
    x = 10,296.85

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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.