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Finding the Fourth Proportional to 19,251.60, 28,853.10 and 9,369.60

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Solution

The fourth proportional to 19,251.60, 28,853.10 and 9,369.60 is: 14,042.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,251.60 : 28,853.10 = 9,369.60 : x
  2. Step 2: Convert to fraction form
    19,251.60/28,853.10 = 9,369.60/x
  3. Step 3: Cross multiply
    19,251.60x = 28,853.10 × 9,369.60
  4. Step 4: Simplify right side
    19,251.60x = 270,342,005.76
  5. Step 5: Solve for x
    x = 270,342,005.76/19,251.60
  6. Step 6: Final answer
    x = 14,042.57

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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.