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Finding the Fourth Proportional to 73,109.42, 100,891.02 and 39,575.42

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Solution

The fourth proportional to 73,109.42, 100,891.02 and 39,575.42 is: 54,614.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,109.42 : 100,891.02 = 39,575.42 : x
  2. Step 2: Convert to fraction form
    73,109.42/100,891.02 = 39,575.42/x
  3. Step 3: Cross multiply
    73,109.42x = 100,891.02 × 39,575.42
  4. Step 4: Simplify right side
    73,109.42x = 3,992,804,040.62
  5. Step 5: Solve for x
    x = 3,992,804,040.62/73,109.42
  6. Step 6: Final answer
    x = 54,614.09

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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.