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Finding the Fourth Proportional to 363,474.20, 545,322.90 and 186,105.74

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Solution

The fourth proportional to 363,474.20, 545,322.90 and 186,105.74 is: 279,215.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,474.20 : 545,322.90 = 186,105.74 : x
  2. Step 2: Convert to fraction form
    363,474.20/545,322.90 = 186,105.74/x
  3. Step 3: Cross multiply
    363,474.20x = 545,322.90 × 186,105.74
  4. Step 4: Simplify right side
    363,474.20x = 101,487,721,843.45
  5. Step 5: Solve for x
    x = 101,487,721,843.45/363,474.20
  6. Step 6: Final answer
    x = 279,215.75

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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.