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Finding the Fourth Proportional to 73,118.32, 100,903.30 and 39,584.32

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Solution

The fourth proportional to 73,118.32, 100,903.30 and 39,584.32 is: 54,626.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,118.32 : 100,903.30 = 39,584.32 : x
  2. Step 2: Convert to fraction form
    73,118.32/100,903.30 = 39,584.32/x
  3. Step 3: Cross multiply
    73,118.32x = 100,903.30 × 39,584.32
  4. Step 4: Simplify right side
    73,118.32x = 3,994,188,516.26
  5. Step 5: Solve for x
    x = 3,994,188,516.26/73,118.32
  6. Step 6: Final answer
    x = 54,626.37

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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.