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Finding the Fourth Proportional to 356,311.40, 534,471.58 and 106,978.92

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Solution

The fourth proportional to 356,311.40, 534,471.58 and 106,978.92 is: 160,469.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,311.40 : 534,471.58 = 106,978.92 : x
  2. Step 2: Convert to fraction form
    356,311.40/534,471.58 = 106,978.92/x
  3. Step 3: Cross multiply
    356,311.40x = 534,471.58 × 106,978.92
  4. Step 4: Simplify right side
    356,311.40x = 57,177,192,399.09
  5. Step 5: Solve for x
    x = 57,177,192,399.09/356,311.40
  6. Step 6: Final answer
    x = 160,469.73

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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.