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Finding the Fourth Proportional to 641,555.85, 885,315.51 and 365,924.61

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Solution

The fourth proportional to 641,555.85, 885,315.51 and 365,924.61 is: 504,957.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,555.85 : 885,315.51 = 365,924.61 : x
  2. Step 2: Convert to fraction form
    641,555.85/885,315.51 = 365,924.61/x
  3. Step 3: Cross multiply
    641,555.85x = 885,315.51 × 365,924.61
  4. Step 4: Simplify right side
    641,555.85x = 323,958,732,723.70
  5. Step 5: Solve for x
    x = 323,958,732,723.70/641,555.85
  6. Step 6: Final answer
    x = 504,957.96

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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.