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Finding the Fourth Proportional to 271,176.20, 406,764.30 and 74,184.20

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Solution

The fourth proportional to 271,176.20, 406,764.30 and 74,184.20 is: 111,276.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,176.20 : 406,764.30 = 74,184.20 : x
  2. Step 2: Convert to fraction form
    271,176.20/406,764.30 = 74,184.20/x
  3. Step 3: Cross multiply
    271,176.20x = 406,764.30 × 74,184.20
  4. Step 4: Simplify right side
    271,176.20x = 30,175,484,184.06
  5. Step 5: Solve for x
    x = 30,175,484,184.06/271,176.20
  6. Step 6: Final answer
    x = 111,276.30

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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.