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Finding the Fourth Proportional to 519,889.38, 717,447.41 and 281,425.38

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Solution

The fourth proportional to 519,889.38, 717,447.41 and 281,425.38 is: 388,367.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,889.38 : 717,447.41 = 281,425.38 : x
  2. Step 2: Convert to fraction form
    519,889.38/717,447.41 = 281,425.38/x
  3. Step 3: Cross multiply
    519,889.38x = 717,447.41 × 281,425.38
  4. Step 4: Simplify right side
    519,889.38x = 201,907,909,989.27
  5. Step 5: Solve for x
    x = 201,907,909,989.27/519,889.38
  6. Step 6: Final answer
    x = 388,367.06

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.