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Finding the Fourth Proportional to 519,735.57, 717,249.53 and 287,177.48

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Solution

The fourth proportional to 519,735.57, 717,249.53 and 287,177.48 is: 396,312.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,735.57 : 717,249.53 = 287,177.48 : x
  2. Step 2: Convert to fraction form
    519,735.57/717,249.53 = 287,177.48/x
  3. Step 3: Cross multiply
    519,735.57x = 717,249.53 × 287,177.48
  4. Step 4: Simplify right side
    519,735.57x = 205,977,916,412.50
  5. Step 5: Solve for x
    x = 205,977,916,412.50/519,735.57
  6. Step 6: Final answer
    x = 396,312.91

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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.