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Finding the Fourth Proportional to 17,124.80, 25,648.80 and 10,212.80

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Solution

The fourth proportional to 17,124.80, 25,648.80 and 10,212.80 is: 15,296.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,124.80 : 25,648.80 = 10,212.80 : x
  2. Step 2: Convert to fraction form
    17,124.80/25,648.80 = 10,212.80/x
  3. Step 3: Cross multiply
    17,124.80x = 25,648.80 × 10,212.80
  4. Step 4: Simplify right side
    17,124.80x = 261,946,064.64
  5. Step 5: Solve for x
    x = 261,946,064.64/17,124.80
  6. Step 6: Final answer
    x = 15,296.30

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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.