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Finding the Fourth Proportional to 441,805.80, 662,708.70 and 407,591.40

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Solution

The fourth proportional to 441,805.80, 662,708.70 and 407,591.40 is: 611,387.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    441,805.80 : 662,708.70 = 407,591.40 : x
  2. Step 2: Convert to fraction form
    441,805.80/662,708.70 = 407,591.40/x
  3. Step 3: Cross multiply
    441,805.80x = 662,708.70 × 407,591.40
  4. Step 4: Simplify right side
    441,805.80x = 270,114,366,825.18
  5. Step 5: Solve for x
    x = 270,114,366,825.18/441,805.80
  6. Step 6: Final answer
    x = 611,387.10

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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.