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Finding the Fourth Proportional to 248,194.20, 372,291.30 and 206,859.90

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Solution

The fourth proportional to 248,194.20, 372,291.30 and 206,859.90 is: 310,289.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    248,194.20 : 372,291.30 = 206,859.90 : x
  2. Step 2: Convert to fraction form
    248,194.20/372,291.30 = 206,859.90/x
  3. Step 3: Cross multiply
    248,194.20x = 372,291.30 × 206,859.90
  4. Step 4: Simplify right side
    248,194.20x = 77,012,141,088.87
  5. Step 5: Solve for x
    x = 77,012,141,088.87/248,194.20
  6. Step 6: Final answer
    x = 310,289.85

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.