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Finding the Fourth Proportional to 608,814.53, 913,074.16 and 253,634.79

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Solution

The fourth proportional to 608,814.53, 913,074.16 and 253,634.79 is: 380,390.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    608,814.53 : 913,074.16 = 253,634.79 : x
  2. Step 2: Convert to fraction form
    608,814.53/913,074.16 = 253,634.79/x
  3. Step 3: Cross multiply
    608,814.53x = 913,074.16 × 253,634.79
  4. Step 4: Simplify right side
    608,814.53x = 231,587,372,826.03
  5. Step 5: Solve for x
    x = 231,587,372,826.03/608,814.53
  6. Step 6: Final answer
    x = 380,390.68

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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.