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Finding the Fourth Proportional to 272,699.87, 409,077.74 and 104,361.79

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Solution

The fourth proportional to 272,699.87, 409,077.74 and 104,361.79 is: 156,553.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    272,699.87 : 409,077.74 = 104,361.79 : x
  2. Step 2: Convert to fraction form
    272,699.87/409,077.74 = 104,361.79/x
  3. Step 3: Cross multiply
    272,699.87x = 409,077.74 × 104,361.79
  4. Step 4: Simplify right side
    272,699.87x = 42,692,085,195.55
  5. Step 5: Solve for x
    x = 42,692,085,195.55/272,699.87
  6. Step 6: Final answer
    x = 156,553.38

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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.