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Finding the Fourth Proportional to 401,234.92, 553,700.58 and 219,957.16

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Solution

The fourth proportional to 401,234.92, 553,700.58 and 219,957.16 is: 303,538.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,234.92 : 553,700.58 = 219,957.16 : x
  2. Step 2: Convert to fraction form
    401,234.92/553,700.58 = 219,957.16/x
  3. Step 3: Cross multiply
    401,234.92x = 553,700.58 × 219,957.16
  4. Step 4: Simplify right side
    401,234.92x = 121,790,407,067.15
  5. Step 5: Solve for x
    x = 121,790,407,067.15/401,234.92
  6. Step 6: Final answer
    x = 303,538.90

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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.