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Finding the Fourth Proportional to 331,805.40, 497,772.90 and 132,091.80

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Solution

The fourth proportional to 331,805.40, 497,772.90 and 132,091.80 is: 198,163.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    331,805.40 : 497,772.90 = 132,091.80 : x
  2. Step 2: Convert to fraction form
    331,805.40/497,772.90 = 132,091.80/x
  3. Step 3: Cross multiply
    331,805.40x = 497,772.90 × 132,091.80
  4. Step 4: Simplify right side
    331,805.40x = 65,751,718,352.22
  5. Step 5: Solve for x
    x = 65,751,718,352.22/331,805.40
  6. Step 6: Final answer
    x = 198,163.50

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1.5x scale

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.