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Finding the Fourth Proportional to 79,177.68, 118,768.02 and 25,869.80

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Solution

The fourth proportional to 79,177.68, 118,768.02 and 25,869.80 is: 38,805.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,177.68 : 118,768.02 = 25,869.80 : x
  2. Step 2: Convert to fraction form
    79,177.68/118,768.02 = 25,869.80/x
  3. Step 3: Cross multiply
    79,177.68x = 118,768.02 × 25,869.80
  4. Step 4: Simplify right side
    79,177.68x = 3,072,504,200.61
  5. Step 5: Solve for x
    x = 3,072,504,200.61/79,177.68
  6. Step 6: Final answer
    x = 38,805.18

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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.