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Finding the Fourth Proportional to 14,399.92, 21,559.74 and 7,364.80

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Solution

The fourth proportional to 14,399.92, 21,559.74 and 7,364.80 is: 11,026.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,399.92 : 21,559.74 = 7,364.80 : x
  2. Step 2: Convert to fraction form
    14,399.92/21,559.74 = 7,364.80/x
  3. Step 3: Cross multiply
    14,399.92x = 21,559.74 × 7,364.80
  4. Step 4: Simplify right side
    14,399.92x = 158,783,173.15
  5. Step 5: Solve for x
    x = 158,783,173.15/14,399.92
  6. Step 6: Final answer
    x = 11,026.67

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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.