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Finding the Fourth Proportional to 19,324.58, 28,978.76 and 6,173.42

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Solution

The fourth proportional to 19,324.58, 28,978.76 and 6,173.42 is: 9,257.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,324.58 : 28,978.76 = 6,173.42 : x
  2. Step 2: Convert to fraction form
    19,324.58/28,978.76 = 6,173.42/x
  3. Step 3: Cross multiply
    19,324.58x = 28,978.76 × 6,173.42
  4. Step 4: Simplify right side
    19,324.58x = 178,897,927.10
  5. Step 5: Solve for x
    x = 178,897,927.10/19,324.58
  6. Step 6: Final answer
    x = 9,257.53

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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.