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Finding the Fourth Proportional to 641,551.34, 885,309.30 and 365,920.09

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Solution

The fourth proportional to 641,551.34, 885,309.30 and 365,920.09 is: 504,951.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,551.34 : 885,309.30 = 365,920.09 : x
  2. Step 2: Convert to fraction form
    641,551.34/885,309.30 = 365,920.09/x
  3. Step 3: Cross multiply
    641,551.34x = 885,309.30 × 365,920.09
  4. Step 4: Simplify right side
    641,551.34x = 323,952,456,520.56
  5. Step 5: Solve for x
    x = 323,952,456,520.56/641,551.34
  6. Step 6: Final answer
    x = 504,951.72

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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.