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Finding the Fourth Proportional to 74,640.75, 103,007.57 and 44,015.09

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Solution

The fourth proportional to 74,640.75, 103,007.57 and 44,015.09 is: 60,742.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,640.75 : 103,007.57 = 44,015.09 : x
  2. Step 2: Convert to fraction form
    74,640.75/103,007.57 = 44,015.09/x
  3. Step 3: Cross multiply
    74,640.75x = 103,007.57 × 44,015.09
  4. Step 4: Simplify right side
    74,640.75x = 4,533,886,729.12
  5. Step 5: Solve for x
    x = 4,533,886,729.12/74,640.75
  6. Step 6: Final answer
    x = 60,742.78

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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.