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Finding the Fourth Proportional to 449,998.29, 621,153.90 and 259,087.77

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Solution

The fourth proportional to 449,998.29, 621,153.90 and 259,087.77 is: 357,631.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    449,998.29 : 621,153.90 = 259,087.77 : x
  2. Step 2: Convert to fraction form
    449,998.29/621,153.90 = 259,087.77/x
  3. Step 3: Cross multiply
    449,998.29x = 621,153.90 × 259,087.77
  4. Step 4: Simplify right side
    449,998.29x = 160,933,378,777.80
  5. Step 5: Solve for x
    x = 160,933,378,777.80/449,998.29
  6. Step 6: Final answer
    x = 357,631.09

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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.