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Finding the Fourth Proportional to 519,833, 717,371.70 and 281,369

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Solution

The fourth proportional to 519,833, 717,371.70 and 281,369 is: 388,290.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,833 : 717,371.70 = 281,369 : x
  2. Step 2: Convert to fraction form
    519,833/717,371.70 = 281,369/x
  3. Step 3: Cross multiply
    519,833x = 717,371.70 × 281,369
  4. Step 4: Simplify right side
    519,833x = 201,846,157,857.30
  5. Step 5: Solve for x
    x = 201,846,157,857.30/519,833
  6. Step 6: Final answer
    x = 388,290.39

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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.