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Finding the Fourth Proportional to 74,662.60, 111,993.90 and 27,909.40

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Solution

The fourth proportional to 74,662.60, 111,993.90 and 27,909.40 is: 41,864.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,662.60 : 111,993.90 = 27,909.40 : x
  2. Step 2: Convert to fraction form
    74,662.60/111,993.90 = 27,909.40/x
  3. Step 3: Cross multiply
    74,662.60x = 111,993.90 × 27,909.40
  4. Step 4: Simplify right side
    74,662.60x = 3,125,682,552.66
  5. Step 5: Solve for x
    x = 3,125,682,552.66/74,662.60
  6. Step 6: Final answer
    x = 41,864.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.