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Finding the Fourth Proportional to 320,371.92, 480,755.52 and 162,713.52

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Solution

The fourth proportional to 320,371.92, 480,755.52 and 162,713.52 is: 244,170.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    320,371.92 : 480,755.52 = 162,713.52 : x
  2. Step 2: Convert to fraction form
    320,371.92/480,755.52 = 162,713.52/x
  3. Step 3: Cross multiply
    320,371.92x = 480,755.52 × 162,713.52
  4. Step 4: Simplify right side
    320,371.92x = 78,225,422,918.63
  5. Step 5: Solve for x
    x = 78,225,422,918.63/320,371.92
  6. Step 6: Final answer
    x = 244,170.66

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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.