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Finding the Fourth Proportional to 519,817, 717,349.62 and 281,353

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Solution

The fourth proportional to 519,817, 717,349.62 and 281,353 is: 388,268.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,817 : 717,349.62 = 281,353 : x
  2. Step 2: Convert to fraction form
    519,817/717,349.62 = 281,353/x
  3. Step 3: Cross multiply
    519,817x = 717,349.62 × 281,353
  4. Step 4: Simplify right side
    519,817x = 201,828,467,635.86
  5. Step 5: Solve for x
    x = 201,828,467,635.86/519,817
  6. Step 6: Final answer
    x = 388,268.31

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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.