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Finding the Fourth Proportional to 627,517.94, 865,941.53 and 355,589.08

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Solution

The fourth proportional to 627,517.94, 865,941.53 and 355,589.08 is: 490,694.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,517.94 : 865,941.53 = 355,589.08 : x
  2. Step 2: Convert to fraction form
    627,517.94/865,941.53 = 355,589.08/x
  3. Step 3: Cross multiply
    627,517.94x = 865,941.53 × 355,589.08
  4. Step 4: Simplify right side
    627,517.94x = 307,919,348,043.69
  5. Step 5: Solve for x
    x = 307,919,348,043.69/627,517.94
  6. Step 6: Final answer
    x = 490,694.10

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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.