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Finding the Fourth Proportional to 73,172.46, 100,980.17 and 40,906.24

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Solution

The fourth proportional to 73,172.46, 100,980.17 and 40,906.24 is: 56,451.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,172.46 : 100,980.17 = 40,906.24 : x
  2. Step 2: Convert to fraction form
    73,172.46/100,980.17 = 40,906.24/x
  3. Step 3: Cross multiply
    73,172.46x = 100,980.17 × 40,906.24
  4. Step 4: Simplify right side
    73,172.46x = 4,130,719,049.68
  5. Step 5: Solve for x
    x = 4,130,719,049.68/73,172.46
  6. Step 6: Final answer
    x = 56,451.82

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1.5x scale

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.