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Finding the Fourth Proportional to 316,954.62, 437,410.94 and 189,605.61

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Solution

The fourth proportional to 316,954.62, 437,410.94 and 189,605.61 is: 261,663.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,954.62 : 437,410.94 = 189,605.61 : x
  2. Step 2: Convert to fraction form
    316,954.62/437,410.94 = 189,605.61/x
  3. Step 3: Cross multiply
    316,954.62x = 437,410.94 × 189,605.61
  4. Step 4: Simplify right side
    316,954.62x = 82,935,567,151.35
  5. Step 5: Solve for x
    x = 82,935,567,151.35/316,954.62
  6. Step 6: Final answer
    x = 261,663.85

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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.