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Finding the Fourth Proportional to 519,729.75, 717,227.06 and 281,265.75

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Solution

The fourth proportional to 519,729.75, 717,227.06 and 281,265.75 is: 388,146.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,729.75 : 717,227.06 = 281,265.75 : x
  2. Step 2: Convert to fraction form
    519,729.75/717,227.06 = 281,265.75/x
  3. Step 3: Cross multiply
    519,729.75x = 717,227.06 × 281,265.75
  4. Step 4: Simplify right side
    519,729.75x = 201,731,405,544.87
  5. Step 5: Solve for x
    x = 201,731,405,544.87/519,729.75
  6. Step 6: Final answer
    x = 388,146.74

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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.