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Finding the Fourth Proportional to 398,843.06, 598,381.24 and 118,367.60

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Solution

The fourth proportional to 398,843.06, 598,381.24 and 118,367.60 is: 177,586.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,843.06 : 598,381.24 = 118,367.60 : x
  2. Step 2: Convert to fraction form
    398,843.06/598,381.24 = 118,367.60/x
  3. Step 3: Cross multiply
    398,843.06x = 598,381.24 × 118,367.60
  4. Step 4: Simplify right side
    398,843.06x = 70,828,951,263.82
  5. Step 5: Solve for x
    x = 70,828,951,263.82/398,843.06
  6. Step 6: Final answer
    x = 177,586.02

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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.