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Finding the Fourth Proportional to 401,165.44, 553,596.42 and 219,873.40

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Solution

The fourth proportional to 401,165.44, 553,596.42 and 219,873.40 is: 303,418.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,165.44 : 553,596.42 = 219,873.40 : x
  2. Step 2: Convert to fraction form
    401,165.44/553,596.42 = 219,873.40/x
  3. Step 3: Cross multiply
    401,165.44x = 553,596.42 × 219,873.40
  4. Step 4: Simplify right side
    401,165.44x = 121,721,127,093.23
  5. Step 5: Solve for x
    x = 121,721,127,093.23/401,165.44
  6. Step 6: Final answer
    x = 303,418.78

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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.