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Finding the Fourth Proportional to 262,814.39, 393,648.99 and 172,755.44

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Solution

The fourth proportional to 262,814.39, 393,648.99 and 172,755.44 is: 258,756.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,814.39 : 393,648.99 = 172,755.44 : x
  2. Step 2: Convert to fraction form
    262,814.39/393,648.99 = 172,755.44/x
  3. Step 3: Cross multiply
    262,814.39x = 393,648.99 × 172,755.44
  4. Step 4: Simplify right side
    262,814.39x = 68,005,004,473.01
  5. Step 5: Solve for x
    x = 68,005,004,473.01/262,814.39
  6. Step 6: Final answer
    x = 258,756.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.