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Finding the Fourth Proportional to 627,386.14, 865,791.20 and 340,906.24

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Solution

The fourth proportional to 627,386.14, 865,791.20 and 340,906.24 is: 470,449.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,386.14 : 865,791.20 = 340,906.24 : x
  2. Step 2: Convert to fraction form
    627,386.14/865,791.20 = 340,906.24/x
  3. Step 3: Cross multiply
    627,386.14x = 865,791.20 × 340,906.24
  4. Step 4: Simplify right side
    627,386.14x = 295,153,622,617.09
  5. Step 5: Solve for x
    x = 295,153,622,617.09/627,386.14
  6. Step 6: Final answer
    x = 470,449.70

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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.