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Finding the Fourth Proportional to 288,591.20, 398,139.41 and 191,841.84

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Solution

The fourth proportional to 288,591.20, 398,139.41 and 191,841.84 is: 264,664.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    288,591.20 : 398,139.41 = 191,841.84 : x
  2. Step 2: Convert to fraction form
    288,591.20/398,139.41 = 191,841.84/x
  3. Step 3: Cross multiply
    288,591.20x = 398,139.41 × 191,841.84
  4. Step 4: Simplify right side
    288,591.20x = 76,379,796,990.91
  5. Step 5: Solve for x
    x = 76,379,796,990.91/288,591.20
  6. Step 6: Final answer
    x = 264,664.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.