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Finding the Fourth Proportional to 73,080.50, 100,851.18 and 39,546.50

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Solution

The fourth proportional to 73,080.50, 100,851.18 and 39,546.50 is: 54,574.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,080.50 : 100,851.18 = 39,546.50 : x
  2. Step 2: Convert to fraction form
    73,080.50/100,851.18 = 39,546.50/x
  3. Step 3: Cross multiply
    73,080.50x = 100,851.18 × 39,546.50
  4. Step 4: Simplify right side
    73,080.50x = 3,988,311,189.87
  5. Step 5: Solve for x
    x = 3,988,311,189.87/73,080.50
  6. Step 6: Final answer
    x = 54,574.22

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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.