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Finding the Fourth Proportional to 174,310.40, 261,489.90 and 74,469.80

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Solution

The fourth proportional to 174,310.40, 261,489.90 and 74,469.80 is: 111,715.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    174,310.40 : 261,489.90 = 74,469.80 : x
  2. Step 2: Convert to fraction form
    174,310.40/261,489.90 = 74,469.80/x
  3. Step 3: Cross multiply
    174,310.40x = 261,489.90 × 74,469.80
  4. Step 4: Simplify right side
    174,310.40x = 19,473,100,555.02
  5. Step 5: Solve for x
    x = 19,473,100,555.02/174,310.40
  6. Step 6: Final answer
    x = 111,715.08

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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.