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Finding the Fourth Proportional to 627,666.12, 866,198.16 and 355,734.54

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Solution

The fourth proportional to 627,666.12, 866,198.16 and 355,734.54 is: 490,924.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,666.12 : 866,198.16 = 355,734.54 : x
  2. Step 2: Convert to fraction form
    627,666.12/866,198.16 = 355,734.54/x
  3. Step 3: Cross multiply
    627,666.12x = 866,198.16 × 355,734.54
  4. Step 4: Simplify right side
    627,666.12x = 308,136,603,996.45
  5. Step 5: Solve for x
    x = 308,136,603,996.45/627,666.12
  6. Step 6: Final answer
    x = 490,924.39

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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.