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Finding the Fourth Proportional to 19,274.80, 28,825.80 and 16,164.40

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Solution

The fourth proportional to 19,274.80, 28,825.80 and 16,164.40 is: 24,174.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,274.80 : 28,825.80 = 16,164.40 : x
  2. Step 2: Convert to fraction form
    19,274.80/28,825.80 = 16,164.40/x
  3. Step 3: Cross multiply
    19,274.80x = 28,825.80 × 16,164.40
  4. Step 4: Simplify right side
    19,274.80x = 465,951,761.52
  5. Step 5: Solve for x
    x = 465,951,761.52/19,274.80
  6. Step 6: Final answer
    x = 24,174.14

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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.