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Finding the Fourth Proportional to 519,751.72, 717,257.46 and 281,287.72

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Solution

The fourth proportional to 519,751.72, 717,257.46 and 281,287.72 is: 388,177.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,751.72 : 717,257.46 = 281,287.72 : x
  2. Step 2: Convert to fraction form
    519,751.72/717,257.46 = 281,287.72/x
  3. Step 3: Cross multiply
    519,751.72x = 717,257.46 × 281,287.72
  4. Step 4: Simplify right side
    519,751.72x = 201,755,715,576.39
  5. Step 5: Solve for x
    x = 201,755,715,576.39/519,751.72
  6. Step 6: Final answer
    x = 388,177.10

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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.