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Finding the Fourth Proportional to 627,785.59, 866,305.28 and 352,128.26

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Solution

The fourth proportional to 627,785.59, 866,305.28 and 352,128.26 is: 485,915.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,785.59 : 866,305.28 = 352,128.26 : x
  2. Step 2: Convert to fraction form
    627,785.59/866,305.28 = 352,128.26/x
  3. Step 3: Cross multiply
    627,785.59x = 866,305.28 × 352,128.26
  4. Step 4: Simplify right side
    627,785.59x = 305,050,571,940.58
  5. Step 5: Solve for x
    x = 305,050,571,940.58/627,785.59
  6. Step 6: Final answer
    x = 485,915.22

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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.