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Finding the Fourth Proportional to 19,251.60, 28,819.80 and 16,947.60

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Solution

The fourth proportional to 19,251.60, 28,819.80 and 16,947.60 is: 25,370.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,251.60 : 28,819.80 = 16,947.60 : x
  2. Step 2: Convert to fraction form
    19,251.60/28,819.80 = 16,947.60/x
  3. Step 3: Cross multiply
    19,251.60x = 28,819.80 × 16,947.60
  4. Step 4: Simplify right side
    19,251.60x = 488,426,442.48
  5. Step 5: Solve for x
    x = 488,426,442.48/19,251.60
  6. Step 6: Final answer
    x = 25,370.69

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1.5x scale

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.