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Finding the Fourth Proportional to 74,144, 111,258.58 and 73,542.18

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Solution

The fourth proportional to 74,144, 111,258.58 and 73,542.18 is: 110,355.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,144 : 111,258.58 = 73,542.18 : x
  2. Step 2: Convert to fraction form
    74,144/111,258.58 = 73,542.18/x
  3. Step 3: Cross multiply
    74,144x = 111,258.58 × 73,542.18
  4. Step 4: Simplify right side
    74,144x = 8,182,198,516.90
  5. Step 5: Solve for x
    x = 8,182,198,516.90/74,144
  6. Step 6: Final answer
    x = 110,355.50

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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.