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Finding the Fourth Proportional to 14,819.56, 20,455.14 and 8,534.44

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Solution

The fourth proportional to 14,819.56, 20,455.14 and 8,534.44 is: 11,779.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,819.56 : 20,455.14 = 8,534.44 : x
  2. Step 2: Convert to fraction form
    14,819.56/20,455.14 = 8,534.44/x
  3. Step 3: Cross multiply
    14,819.56x = 20,455.14 × 8,534.44
  4. Step 4: Simplify right side
    14,819.56x = 174,573,165.02
  5. Step 5: Solve for x
    x = 174,573,165.02/14,819.56
  6. Step 6: Final answer
    x = 11,779.92

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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.