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Finding the Fourth Proportional to 79,725.87, 110,021.70 and 43,915.88

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Solution

The fourth proportional to 79,725.87, 110,021.70 and 43,915.88 is: 60,603.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,725.87 : 110,021.70 = 43,915.88 : x
  2. Step 2: Convert to fraction form
    79,725.87/110,021.70 = 43,915.88/x
  3. Step 3: Cross multiply
    79,725.87x = 110,021.70 × 43,915.88
  4. Step 4: Simplify right side
    79,725.87x = 4,831,699,224.49
  5. Step 5: Solve for x
    x = 4,831,699,224.49/79,725.87
  6. Step 6: Final answer
    x = 60,603.91

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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.