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Finding the Fourth Proportional to 627,723.85, 866,255.30 and 355,843.03

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Solution

The fourth proportional to 627,723.85, 866,255.30 and 355,843.03 is: 491,061.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,723.85 : 866,255.30 = 355,843.03 : x
  2. Step 2: Convert to fraction form
    627,723.85/866,255.30 = 355,843.03/x
  3. Step 3: Cross multiply
    627,723.85x = 866,255.30 × 355,843.03
  4. Step 4: Simplify right side
    627,723.85x = 308,250,908,926.34
  5. Step 5: Solve for x
    x = 308,250,908,926.34/627,723.85
  6. Step 6: Final answer
    x = 491,061.33

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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.