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Finding the Fourth Proportional to 517,910.25, 714,735.45 and 285,346.65

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Solution

The fourth proportional to 517,910.25, 714,735.45 and 285,346.65 is: 393,789.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    517,910.25 : 714,735.45 = 285,346.65 : x
  2. Step 2: Convert to fraction form
    517,910.25/714,735.45 = 285,346.65/x
  3. Step 3: Cross multiply
    517,910.25x = 714,735.45 × 285,346.65
  4. Step 4: Simplify right side
    517,910.25x = 203,947,366,293.74
  5. Step 5: Solve for x
    x = 203,947,366,293.74/517,910.25
  6. Step 6: Final answer
    x = 393,789.01

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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.