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Finding the Fourth Proportional to 79,878.55, 110,229.37 and 49,656.95

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Solution

The fourth proportional to 79,878.55, 110,229.37 and 49,656.95 is: 68,524.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,878.55 : 110,229.37 = 49,656.95 : x
  2. Step 2: Convert to fraction form
    79,878.55/110,229.37 = 49,656.95/x
  3. Step 3: Cross multiply
    79,878.55x = 110,229.37 × 49,656.95
  4. Step 4: Simplify right side
    79,878.55x = 5,473,653,515.19
  5. Step 5: Solve for x
    x = 5,473,653,515.19/79,878.55
  6. Step 6: Final answer
    x = 68,524.70

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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.