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Finding the Fourth Proportional to 271,390.56, 406,798.35 and 91,304.49

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Solution

The fourth proportional to 271,390.56, 406,798.35 and 91,304.49 is: 136,860.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    271,390.56 : 406,798.35 = 91,304.49 : x
  2. Step 2: Convert to fraction form
    271,390.56/406,798.35 = 91,304.49/x
  3. Step 3: Cross multiply
    271,390.56x = 406,798.35 × 91,304.49
  4. Step 4: Simplify right side
    271,390.56x = 37,142,515,879.59
  5. Step 5: Solve for x
    x = 37,142,515,879.59/271,390.56
  6. Step 6: Final answer
    x = 136,860.01

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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.