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Finding the Fourth Proportional to 613,286.98, 919,865.76 and 164,053.20

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Solution

The fourth proportional to 613,286.98, 919,865.76 and 164,053.20 is: 246,062.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,286.98 : 919,865.76 = 164,053.20 : x
  2. Step 2: Convert to fraction form
    613,286.98/919,865.76 = 164,053.20/x
  3. Step 3: Cross multiply
    613,286.98x = 919,865.76 × 164,053.20
  4. Step 4: Simplify right side
    613,286.98x = 150,906,921,498.43
  5. Step 5: Solve for x
    x = 150,906,921,498.43/613,286.98
  6. Step 6: Final answer
    x = 246,062.49

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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.