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Finding the Fourth Proportional to 261,163.29, 391,794.11 and 186,097.22

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Solution

The fourth proportional to 261,163.29, 391,794.11 and 186,097.22 is: 279,180.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,163.29 : 391,794.11 = 186,097.22 : x
  2. Step 2: Convert to fraction form
    261,163.29/391,794.11 = 186,097.22/x
  3. Step 3: Cross multiply
    261,163.29x = 391,794.11 × 186,097.22
  4. Step 4: Simplify right side
    261,163.29x = 72,911,794,683.37
  5. Step 5: Solve for x
    x = 72,911,794,683.37/261,163.29
  6. Step 6: Final answer
    x = 279,180.87

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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.