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Finding the Fourth Proportional to 79,722.49, 110,015.72 and 43,915.84

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Solution

The fourth proportional to 79,722.49, 110,015.72 and 43,915.84 is: 60,603.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,722.49 : 110,015.72 = 43,915.84 : x
  2. Step 2: Convert to fraction form
    79,722.49/110,015.72 = 43,915.84/x
  3. Step 3: Cross multiply
    79,722.49x = 110,015.72 × 43,915.84
  4. Step 4: Simplify right side
    79,722.49x = 4,831,431,987.35
  5. Step 5: Solve for x
    x = 4,831,431,987.35/79,722.49
  6. Step 6: Final answer
    x = 60,603.13

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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.