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Finding the Fourth Proportional to 73,778.39, 101,814.50 and 40,245.11

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Solution

The fourth proportional to 73,778.39, 101,814.50 and 40,245.11 is: 55,538.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,778.39 : 101,814.50 = 40,245.11 : x
  2. Step 2: Convert to fraction form
    73,778.39/101,814.50 = 40,245.11/x
  3. Step 3: Cross multiply
    73,778.39x = 101,814.50 × 40,245.11
  4. Step 4: Simplify right side
    73,778.39x = 4,097,535,550.87
  5. Step 5: Solve for x
    x = 4,097,535,550.87/73,778.39
  6. Step 6: Final answer
    x = 55,538.42

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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.