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Finding the Fourth Proportional to 400,892.44, 553,231.66 and 219,610.81

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Solution

The fourth proportional to 400,892.44, 553,231.66 and 219,610.81 is: 303,062.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    400,892.44 : 553,231.66 = 219,610.81 : x
  2. Step 2: Convert to fraction form
    400,892.44/553,231.66 = 219,610.81/x
  3. Step 3: Cross multiply
    400,892.44x = 553,231.66 × 219,610.81
  4. Step 4: Simplify right side
    400,892.44x = 121,495,653,936.30
  5. Step 5: Solve for x
    x = 121,495,653,936.30/400,892.44
  6. Step 6: Final answer
    x = 303,062.97

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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.