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Finding the Fourth Proportional to 14,493.60, 20,005.92 and 13,224.96

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Solution

The fourth proportional to 14,493.60, 20,005.92 and 13,224.96 is: 18,254.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,493.60 : 20,005.92 = 13,224.96 : x
  2. Step 2: Convert to fraction form
    14,493.60/20,005.92 = 13,224.96/x
  3. Step 3: Cross multiply
    14,493.60x = 20,005.92 × 13,224.96
  4. Step 4: Simplify right side
    14,493.60x = 264,577,491.76
  5. Step 5: Solve for x
    x = 264,577,491.76/14,493.60
  6. Step 6: Final answer
    x = 18,254.78

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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.