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Finding the Fourth Proportional to 351,481.79, 527,113.64 and 126,813.11

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Solution

The fourth proportional to 351,481.79, 527,113.64 and 126,813.11 is: 190,180.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,481.79 : 527,113.64 = 126,813.11 : x
  2. Step 2: Convert to fraction form
    351,481.79/527,113.64 = 126,813.11/x
  3. Step 3: Cross multiply
    351,481.79x = 527,113.64 × 126,813.11
  4. Step 4: Simplify right side
    351,481.79x = 66,844,917,693.29
  5. Step 5: Solve for x
    x = 66,844,917,693.29/351,481.79
  6. Step 6: Final answer
    x = 190,180.31

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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.