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Finding the Fourth Proportional to 398,613.68, 597,818.64 and 118,065.32

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Solution

The fourth proportional to 398,613.68, 597,818.64 and 118,065.32 is: 177,067.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,613.68 : 597,818.64 = 118,065.32 : x
  2. Step 2: Convert to fraction form
    398,613.68/597,818.64 = 118,065.32/x
  3. Step 3: Cross multiply
    398,613.68x = 597,818.64 × 118,065.32
  4. Step 4: Simplify right side
    398,613.68x = 70,581,649,033.56
  5. Step 5: Solve for x
    x = 70,581,649,033.56/398,613.68
  6. Step 6: Final answer
    x = 177,067.80

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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.