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Finding the Fourth Proportional to 323,828.70, 485,743.05 and 113,444.70

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Solution

The fourth proportional to 323,828.70, 485,743.05 and 113,444.70 is: 170,167.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    323,828.70 : 485,743.05 = 113,444.70 : x
  2. Step 2: Convert to fraction form
    323,828.70/485,743.05 = 113,444.70/x
  3. Step 3: Cross multiply
    323,828.70x = 485,743.05 × 113,444.70
  4. Step 4: Simplify right side
    323,828.70x = 55,104,974,584.34
  5. Step 5: Solve for x
    x = 55,104,974,584.34/323,828.70
  6. Step 6: Final answer
    x = 170,167.05

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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.