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Finding the Fourth Proportional to 79,720.82, 110,013.28 and 43,914.16

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Solution

The fourth proportional to 79,720.82, 110,013.28 and 43,914.16 is: 60,600.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,720.82 : 110,013.28 = 43,914.16 : x
  2. Step 2: Convert to fraction form
    79,720.82/110,013.28 = 43,914.16/x
  3. Step 3: Cross multiply
    79,720.82x = 110,013.28 × 43,914.16
  4. Step 4: Simplify right side
    79,720.82x = 4,831,140,780.04
  5. Step 5: Solve for x
    x = 4,831,140,780.04/79,720.82
  6. Step 6: Final answer
    x = 60,600.74

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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.