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Finding the Fourth Proportional to 356,121.20, 534,181.79 and 106,803.20

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Solution

The fourth proportional to 356,121.20, 534,181.79 and 106,803.20 is: 160,204.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,121.20 : 534,181.79 = 106,803.20 : x
  2. Step 2: Convert to fraction form
    356,121.20/534,181.79 = 106,803.20/x
  3. Step 3: Cross multiply
    356,121.20x = 534,181.79 × 106,803.20
  4. Step 4: Simplify right side
    356,121.20x = 57,052,321,348.80
  5. Step 5: Solve for x
    x = 57,052,321,348.80/356,121.20
  6. Step 6: Final answer
    x = 160,204.79

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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.