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Finding the Fourth Proportional to 14,491.92, 21,729.72 and 4,628.88

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Solution

The fourth proportional to 14,491.92, 21,729.72 and 4,628.88 is: 6,940.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,491.92 : 21,729.72 = 4,628.88 : x
  2. Step 2: Convert to fraction form
    14,491.92/21,729.72 = 4,628.88/x
  3. Step 3: Cross multiply
    14,491.92x = 21,729.72 × 4,628.88
  4. Step 4: Simplify right side
    14,491.92x = 100,584,266.31
  5. Step 5: Solve for x
    x = 100,584,266.31/14,491.92
  6. Step 6: Final answer
    x = 6,940.71

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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.