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Finding the Fourth Proportional to 15,532.80, 23,299.20 and 11,644.80

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Solution

The fourth proportional to 15,532.80, 23,299.20 and 11,644.80 is: 17,467.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,532.80 : 23,299.20 = 11,644.80 : x
  2. Step 2: Convert to fraction form
    15,532.80/23,299.20 = 11,644.80/x
  3. Step 3: Cross multiply
    15,532.80x = 23,299.20 × 11,644.80
  4. Step 4: Simplify right side
    15,532.80x = 271,314,524.16
  5. Step 5: Solve for x
    x = 271,314,524.16/15,532.80
  6. Step 6: Final answer
    x = 17,467.20

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Similar ratio
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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.