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Finding the Fourth Proportional to 627,657.26, 866,261.72 and 382,784.11

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Solution

The fourth proportional to 627,657.26, 866,261.72 and 382,784.11 is: 528,299.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,657.26 : 866,261.72 = 382,784.11 : x
  2. Step 2: Convert to fraction form
    627,657.26/866,261.72 = 382,784.11/x
  3. Step 3: Cross multiply
    627,657.26x = 866,261.72 × 382,784.11
  4. Step 4: Simplify right side
    627,657.26x = 331,591,215,272.04
  5. Step 5: Solve for x
    x = 331,591,215,272.04/627,657.26
  6. Step 6: Final answer
    x = 528,299.82

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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.