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Finding the Fourth Proportional to 627,383.51, 865,794.71 and 340,903.60

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Solution

The fourth proportional to 627,383.51, 865,794.71 and 340,903.60 is: 470,449.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,383.51 : 865,794.71 = 340,903.60 : x
  2. Step 2: Convert to fraction form
    627,383.51/865,794.71 = 340,903.60/x
  3. Step 3: Cross multiply
    627,383.51x = 865,794.71 × 340,903.60
  4. Step 4: Simplify right side
    627,383.51x = 295,152,532,187.73
  5. Step 5: Solve for x
    x = 295,152,532,187.73/627,383.51
  6. Step 6: Final answer
    x = 470,449.94

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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.