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Finding the Fourth Proportional to 203,987.77, 281,422.49 and 117,930.92

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Solution

The fourth proportional to 203,987.77, 281,422.49 and 117,930.92 is: 162,698.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,987.77 : 281,422.49 = 117,930.92 : x
  2. Step 2: Convert to fraction form
    203,987.77/281,422.49 = 117,930.92/x
  3. Step 3: Cross multiply
    203,987.77x = 281,422.49 × 117,930.92
  4. Step 4: Simplify right side
    203,987.77x = 33,188,411,157.62
  5. Step 5: Solve for x
    x = 33,188,411,157.62/203,987.77
  6. Step 6: Final answer
    x = 162,698.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.