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Finding the Fourth Proportional to 289,504.49, 399,633.41 and 187,617.42

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Solution

The fourth proportional to 289,504.49, 399,633.41 and 187,617.42 is: 258,988.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,504.49 : 399,633.41 = 187,617.42 : x
  2. Step 2: Convert to fraction form
    289,504.49/399,633.41 = 187,617.42/x
  3. Step 3: Cross multiply
    289,504.49x = 399,633.41 × 187,617.42
  4. Step 4: Simplify right side
    289,504.49x = 74,978,189,799.05
  5. Step 5: Solve for x
    x = 74,978,189,799.05/289,504.49
  6. Step 6: Final answer
    x = 258,988.01

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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.