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Finding the Fourth Proportional to 526,910.52, 727,138.44 and 285,196.26

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Solution

The fourth proportional to 526,910.52, 727,138.44 and 285,196.26 is: 393,571.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,910.52 : 727,138.44 = 285,196.26 : x
  2. Step 2: Convert to fraction form
    526,910.52/727,138.44 = 285,196.26/x
  3. Step 3: Cross multiply
    526,910.52x = 727,138.44 × 285,196.26
  4. Step 4: Simplify right side
    526,910.52x = 207,377,163,590.23
  5. Step 5: Solve for x
    x = 207,377,163,590.23/526,910.52
  6. Step 6: Final answer
    x = 393,571.88

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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.