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Finding the Fourth Proportional to 216,996.85, 325,705.34 and 104,755.87

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Solution

The fourth proportional to 216,996.85, 325,705.34 and 104,755.87 is: 157,235.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,996.85 : 325,705.34 = 104,755.87 : x
  2. Step 2: Convert to fraction form
    216,996.85/325,705.34 = 104,755.87/x
  3. Step 3: Cross multiply
    216,996.85x = 325,705.34 × 104,755.87
  4. Step 4: Simplify right side
    216,996.85x = 34,119,546,255.35
  5. Step 5: Solve for x
    x = 34,119,546,255.35/216,996.85
  6. Step 6: Final answer
    x = 157,235.21

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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.