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Finding the Fourth Proportional to 74,050.40, 111,043.20 and 29,662.40

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Solution

The fourth proportional to 74,050.40, 111,043.20 and 29,662.40 is: 44,480.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,050.40 : 111,043.20 = 29,662.40 : x
  2. Step 2: Convert to fraction form
    74,050.40/111,043.20 = 29,662.40/x
  3. Step 3: Cross multiply
    74,050.40x = 111,043.20 × 29,662.40
  4. Step 4: Simplify right side
    74,050.40x = 3,293,807,815.68
  5. Step 5: Solve for x
    x = 3,293,807,815.68/74,050.40
  6. Step 6: Final answer
    x = 44,480.62

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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.