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Finding the Fourth Proportional to 427,891.72, 590,530.19 and 236,905.11

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Solution

The fourth proportional to 427,891.72, 590,530.19 and 236,905.11 is: 326,950.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    427,891.72 : 590,530.19 = 236,905.11 : x
  2. Step 2: Convert to fraction form
    427,891.72/590,530.19 = 236,905.11/x
  3. Step 3: Cross multiply
    427,891.72x = 590,530.19 × 236,905.11
  4. Step 4: Simplify right side
    427,891.72x = 139,899,619,620.27
  5. Step 5: Solve for x
    x = 139,899,619,620.27/427,891.72
  6. Step 6: Final answer
    x = 326,950.99

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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.