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Finding the Fourth Proportional to 79,180.68, 109,270.08 and 45,646.68

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Solution

The fourth proportional to 79,180.68, 109,270.08 and 45,646.68 is: 62,992.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,180.68 : 109,270.08 = 45,646.68 : x
  2. Step 2: Convert to fraction form
    79,180.68/109,270.08 = 45,646.68/x
  3. Step 3: Cross multiply
    79,180.68x = 109,270.08 × 45,646.68
  4. Step 4: Simplify right side
    79,180.68x = 4,987,816,375.33
  5. Step 5: Solve for x
    x = 4,987,816,375.33/79,180.68
  6. Step 6: Final answer
    x = 62,992.85

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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.