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Finding the Fourth Proportional to 79,940.40, 110,314.86 and 44,129.64

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Solution

The fourth proportional to 79,940.40, 110,314.86 and 44,129.64 is: 60,897.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,940.40 : 110,314.86 = 44,129.64 : x
  2. Step 2: Convert to fraction form
    79,940.40/110,314.86 = 44,129.64/x
  3. Step 3: Cross multiply
    79,940.40x = 110,314.86 × 44,129.64
  4. Step 4: Simplify right side
    79,940.40x = 4,868,154,837.80
  5. Step 5: Solve for x
    x = 4,868,154,837.80/79,940.40
  6. Step 6: Final answer
    x = 60,897.30

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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.