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Finding the Fourth Proportional to 400,358.10, 552,489.48 and 219,067.96

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Solution

The fourth proportional to 400,358.10, 552,489.48 and 219,067.96 is: 302,311.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,358.10 : 552,489.48 = 219,067.96 : x
  2. Step 2: Convert to fraction form
    400,358.10/552,489.48 = 219,067.96/x
  3. Step 3: Cross multiply
    400,358.10x = 552,489.48 × 219,067.96
  4. Step 4: Simplify right side
    400,358.10x = 121,032,743,305.06
  5. Step 5: Solve for x
    x = 121,032,743,305.06/400,358.10
  6. Step 6: Final answer
    x = 302,311.21

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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.