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Finding the Fourth Proportional to 469,888.55, 648,446.82 and 255,028.61

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Solution

The fourth proportional to 469,888.55, 648,446.82 and 255,028.61 is: 351,939.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    469,888.55 : 648,446.82 = 255,028.61 : x
  2. Step 2: Convert to fraction form
    469,888.55/648,446.82 = 255,028.61/x
  3. Step 3: Cross multiply
    469,888.55x = 648,446.82 × 255,028.61
  4. Step 4: Simplify right side
    469,888.55x = 165,372,491,163.52
  5. Step 5: Solve for x
    x = 165,372,491,163.52/469,888.55
  6. Step 6: Final answer
    x = 351,939.82

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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.