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Finding the Fourth Proportional to 408,747.88, 612,235.66 and 197,943.76

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Solution

The fourth proportional to 408,747.88, 612,235.66 and 197,943.76 is: 296,486.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,747.88 : 612,235.66 = 197,943.76 : x
  2. Step 2: Convert to fraction form
    408,747.88/612,235.66 = 197,943.76/x
  3. Step 3: Cross multiply
    408,747.88x = 612,235.66 × 197,943.76
  4. Step 4: Simplify right side
    408,747.88x = 121,188,228,546.48
  5. Step 5: Solve for x
    x = 121,188,228,546.48/408,747.88
  6. Step 6: Final answer
    x = 296,486.50

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1.5x scale

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.