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Finding the Fourth Proportional to 78,799.71, 108,729.99 and 44,339.64

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Solution

The fourth proportional to 78,799.71, 108,729.99 and 44,339.64 is: 61,181.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,799.71 : 108,729.99 = 44,339.64 : x
  2. Step 2: Convert to fraction form
    78,799.71/108,729.99 = 44,339.64/x
  3. Step 3: Cross multiply
    78,799.71x = 108,729.99 × 44,339.64
  4. Step 4: Simplify right side
    78,799.71x = 4,821,048,613.80
  5. Step 5: Solve for x
    x = 4,821,048,613.80/78,799.71
  6. Step 6: Final answer
    x = 61,181.05

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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.