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Finding the Fourth Proportional to 627,758.39, 866,288.48 and 355,851.42

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Solution

The fourth proportional to 627,758.39, 866,288.48 and 355,851.42 is: 491,064.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,758.39 : 866,288.48 = 355,851.42 : x
  2. Step 2: Convert to fraction form
    627,758.39/866,288.48 = 355,851.42/x
  3. Step 3: Cross multiply
    627,758.39x = 866,288.48 × 355,851.42
  4. Step 4: Simplify right side
    627,758.39x = 308,269,985,737.64
  5. Step 5: Solve for x
    x = 308,269,985,737.64/627,758.39
  6. Step 6: Final answer
    x = 491,064.70

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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.