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Finding the Fourth Proportional to 22,672.80, 34,009.20 and 13,912.65

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Solution

The fourth proportional to 22,672.80, 34,009.20 and 13,912.65 is: 20,868.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,672.80 : 34,009.20 = 13,912.65 : x
  2. Step 2: Convert to fraction form
    22,672.80/34,009.20 = 13,912.65/x
  3. Step 3: Cross multiply
    22,672.80x = 34,009.20 × 13,912.65
  4. Step 4: Simplify right side
    22,672.80x = 473,158,096.38
  5. Step 5: Solve for x
    x = 473,158,096.38/22,672.80
  6. Step 6: Final answer
    x = 20,868.98

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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.