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Finding the Fourth Proportional to 223,691.64, 335,536.74 and 90,570.84

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Solution

The fourth proportional to 223,691.64, 335,536.74 and 90,570.84 is: 135,855.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    223,691.64 : 335,536.74 = 90,570.84 : x
  2. Step 2: Convert to fraction form
    223,691.64/335,536.74 = 90,570.84/x
  3. Step 3: Cross multiply
    223,691.64x = 335,536.74 × 90,570.84
  4. Step 4: Simplify right side
    223,691.64x = 30,389,844,392.66
  5. Step 5: Solve for x
    x = 30,389,844,392.66/223,691.64
  6. Step 6: Final answer
    x = 135,855.97

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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.