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Finding the Fourth Proportional to 441,839.40, 663,104.70 and 205,211.40

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Solution

The fourth proportional to 441,839.40, 663,104.70 and 205,211.40 is: 307,977.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    441,839.40 : 663,104.70 = 205,211.40 : x
  2. Step 2: Convert to fraction form
    441,839.40/663,104.70 = 205,211.40/x
  3. Step 3: Cross multiply
    441,839.40x = 663,104.70 × 205,211.40
  4. Step 4: Simplify right side
    441,839.40x = 136,076,643,833.58
  5. Step 5: Solve for x
    x = 136,076,643,833.58/441,839.40
  6. Step 6: Final answer
    x = 307,977.61

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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.