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Finding the Fourth Proportional to 398,718.58, 597,975.18 and 118,170.22

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Solution

The fourth proportional to 398,718.58, 597,975.18 and 118,170.22 is: 177,224.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,718.58 : 597,975.18 = 118,170.22 : x
  2. Step 2: Convert to fraction form
    398,718.58/597,975.18 = 118,170.22/x
  3. Step 3: Cross multiply
    398,718.58x = 597,975.18 × 118,170.22
  4. Step 4: Simplify right side
    398,718.58x = 70,662,858,575.14
  5. Step 5: Solve for x
    x = 70,662,858,575.14/398,718.58
  6. Step 6: Final answer
    x = 177,224.90

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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.