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Finding the Fourth Proportional to 14,819.63, 20,458.51 and 11,454.83

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Solution

The fourth proportional to 14,819.63, 20,458.51 and 11,454.83 is: 15,813.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,819.63 : 20,458.51 = 11,454.83 : x
  2. Step 2: Convert to fraction form
    14,819.63/20,458.51 = 11,454.83/x
  3. Step 3: Cross multiply
    14,819.63x = 20,458.51 × 11,454.83
  4. Step 4: Simplify right side
    14,819.63x = 234,348,623.17
  5. Step 5: Solve for x
    x = 234,348,623.17/14,819.63
  6. Step 6: Final answer
    x = 15,813.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.