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Finding the Fourth Proportional to 271,327.80, 406,985.30 and 74,335.80

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Solution

The fourth proportional to 271,327.80, 406,985.30 and 74,335.80 is: 111,501.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,327.80 : 406,985.30 = 74,335.80 : x
  2. Step 2: Convert to fraction form
    271,327.80/406,985.30 = 74,335.80/x
  3. Step 3: Cross multiply
    271,327.80x = 406,985.30 × 74,335.80
  4. Step 4: Simplify right side
    271,327.80x = 30,253,577,863.74
  5. Step 5: Solve for x
    x = 30,253,577,863.74/271,327.80
  6. Step 6: Final answer
    x = 111,501.95

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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.