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Finding the Fourth Proportional to 13,713.44, 18,924.48 and 7,425.80

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Solution

The fourth proportional to 13,713.44, 18,924.48 and 7,425.80 is: 10,247.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,713.44 : 18,924.48 = 7,425.80 : x
  2. Step 2: Convert to fraction form
    13,713.44/18,924.48 = 7,425.80/x
  3. Step 3: Cross multiply
    13,713.44x = 18,924.48 × 7,425.80
  4. Step 4: Simplify right side
    13,713.44x = 140,529,403.58
  5. Step 5: Solve for x
    x = 140,529,403.58/13,713.44
  6. Step 6: Final answer
    x = 10,247.57

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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.