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Finding the Fourth Proportional to 627,664.72, 866,217.55 and 352,048.45

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Solution

The fourth proportional to 627,664.72, 866,217.55 and 352,048.45 is: 485,849.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    627,664.72 : 866,217.55 = 352,048.45 : x
  2. Step 2: Convert to fraction form
    627,664.72/866,217.55 = 352,048.45/x
  3. Step 3: Cross multiply
    627,664.72x = 866,217.55 × 352,048.45
  4. Step 4: Simplify right side
    627,664.72x = 304,950,541,509.21
  5. Step 5: Solve for x
    x = 304,950,541,509.21/627,664.72
  6. Step 6: Final answer
    x = 485,849.43

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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.