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Finding the Fourth Proportional to 19,672.65, 29,506.53 and 7,974.63

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Solution

The fourth proportional to 19,672.65, 29,506.53 and 7,974.63 is: 11,960.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,672.65 : 29,506.53 = 7,974.63 : x
  2. Step 2: Convert to fraction form
    19,672.65/29,506.53 = 7,974.63/x
  3. Step 3: Cross multiply
    19,672.65x = 29,506.53 × 7,974.63
  4. Step 4: Simplify right side
    19,672.65x = 235,303,659.33
  5. Step 5: Solve for x
    x = 235,303,659.33/19,672.65
  6. Step 6: Final answer
    x = 11,960.95

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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.