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Finding the Fourth Proportional to 271,378.20, 406,994.40 and 93,939.60

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Solution

The fourth proportional to 271,378.20, 406,994.40 and 93,939.60 is: 140,884.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,378.20 : 406,994.40 = 93,939.60 : x
  2. Step 2: Convert to fraction form
    271,378.20/406,994.40 = 93,939.60/x
  3. Step 3: Cross multiply
    271,378.20x = 406,994.40 × 93,939.60
  4. Step 4: Simplify right side
    271,378.20x = 38,232,891,138.24
  5. Step 5: Solve for x
    x = 38,232,891,138.24/271,378.20
  6. Step 6: Final answer
    x = 140,884.17

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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.