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Finding the Fourth Proportional to 34,491.80, 51,738.78 and 12,304.82

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Solution

The fourth proportional to 34,491.80, 51,738.78 and 12,304.82 is: 18,457.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,491.80 : 51,738.78 = 12,304.82 : x
  2. Step 2: Convert to fraction form
    34,491.80/51,738.78 = 12,304.82/x
  3. Step 3: Cross multiply
    34,491.80x = 51,738.78 × 12,304.82
  4. Step 4: Simplify right side
    34,491.80x = 636,636,374.92
  5. Step 5: Solve for x
    x = 636,636,374.92/34,491.80
  6. Step 6: Final answer
    x = 18,457.62

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.