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Finding the Fourth Proportional to 186,487.38, 257,447.89 and 126,375.62

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Solution

The fourth proportional to 186,487.38, 257,447.89 and 126,375.62 is: 174,462.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,487.38 : 257,447.89 = 126,375.62 : x
  2. Step 2: Convert to fraction form
    186,487.38/257,447.89 = 126,375.62/x
  3. Step 3: Cross multiply
    186,487.38x = 257,447.89 × 126,375.62
  4. Step 4: Simplify right side
    186,487.38x = 32,535,136,716.44
  5. Step 5: Solve for x
    x = 32,535,136,716.44/186,487.38
  6. Step 6: Final answer
    x = 174,462.94

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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.