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Finding the Fourth Proportional to 12,573.20, 18,838.20 and 10,629.20

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Solution

The fourth proportional to 12,573.20, 18,838.20 and 10,629.20 is: 15,925.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,573.20 : 18,838.20 = 10,629.20 : x
  2. Step 2: Convert to fraction form
    12,573.20/18,838.20 = 10,629.20/x
  3. Step 3: Cross multiply
    12,573.20x = 18,838.20 × 10,629.20
  4. Step 4: Simplify right side
    12,573.20x = 200,234,995.44
  5. Step 5: Solve for x
    x = 200,234,995.44/12,573.20
  6. Step 6: Final answer
    x = 15,925.54

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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.