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Finding the Fourth Proportional to 627,683.72, 866,243.79 and 352,067.45

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Solution

The fourth proportional to 627,683.72, 866,243.79 and 352,067.45 is: 485,875.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,683.72 : 866,243.79 = 352,067.45 : x
  2. Step 2: Convert to fraction form
    627,683.72/866,243.79 = 352,067.45/x
  3. Step 3: Cross multiply
    627,683.72x = 866,243.79 × 352,067.45
  4. Step 4: Simplify right side
    627,683.72x = 304,976,242,223.64
  5. Step 5: Solve for x
    x = 304,976,242,223.64/627,683.72
  6. Step 6: Final answer
    x = 485,875.66

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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.