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Finding the Fourth Proportional to 270,915.43, 406,392.62 and 93,419.87

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Solution

The fourth proportional to 270,915.43, 406,392.62 and 93,419.87 is: 140,136.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    270,915.43 : 406,392.62 = 93,419.87 : x
  2. Step 2: Convert to fraction form
    270,915.43/406,392.62 = 93,419.87/x
  3. Step 3: Cross multiply
    270,915.43x = 406,392.62 × 93,419.87
  4. Step 4: Simplify right side
    270,915.43x = 37,965,145,729.36
  5. Step 5: Solve for x
    x = 37,965,145,729.36/270,915.43
  6. Step 6: Final answer
    x = 140,136.52

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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.