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Finding the Fourth Proportional to 73,720.20, 101,733.87 and 40,186.20

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Solution

The fourth proportional to 73,720.20, 101,733.87 and 40,186.20 is: 55,456.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,720.20 : 101,733.87 = 40,186.20 : x
  2. Step 2: Convert to fraction form
    73,720.20/101,733.87 = 40,186.20/x
  3. Step 3: Cross multiply
    73,720.20x = 101,733.87 × 40,186.20
  4. Step 4: Simplify right side
    73,720.20x = 4,088,297,646.59
  5. Step 5: Solve for x
    x = 4,088,297,646.59/73,720.20
  6. Step 6: Final answer
    x = 55,456.95

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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.