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Finding the Fourth Proportional to 13,364.61, 20,069.70 and 11,141.16

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Solution

The fourth proportional to 13,364.61, 20,069.70 and 11,141.16 is: 16,730.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,364.61 : 20,069.70 = 11,141.16 : x
  2. Step 2: Convert to fraction form
    13,364.61/20,069.70 = 11,141.16/x
  3. Step 3: Cross multiply
    13,364.61x = 20,069.70 × 11,141.16
  4. Step 4: Simplify right side
    13,364.61x = 223,599,738.85
  5. Step 5: Solve for x
    x = 223,599,738.85/13,364.61
  6. Step 6: Final answer
    x = 16,730.73

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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.