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Finding the Fourth Proportional to 73,074.93, 100,860.26 and 42,869.96

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Solution

The fourth proportional to 73,074.93, 100,860.26 and 42,869.96 is: 59,170.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,074.93 : 100,860.26 = 42,869.96 : x
  2. Step 2: Convert to fraction form
    73,074.93/100,860.26 = 42,869.96/x
  3. Step 3: Cross multiply
    73,074.93x = 100,860.26 × 42,869.96
  4. Step 4: Simplify right side
    73,074.93x = 4,323,874,593.14
  5. Step 5: Solve for x
    x = 4,323,874,593.14/73,074.93
  6. Step 6: Final answer
    x = 59,170.42

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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.