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Finding the Fourth Proportional to 73,759.19, 110,635.92 and 21,168.68

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Solution

The fourth proportional to 73,759.19, 110,635.92 and 21,168.68 is: 31,752.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,759.19 : 110,635.92 = 21,168.68 : x
  2. Step 2: Convert to fraction form
    73,759.19/110,635.92 = 21,168.68/x
  3. Step 3: Cross multiply
    73,759.19x = 110,635.92 × 21,168.68
  4. Step 4: Simplify right side
    73,759.19x = 2,342,015,833.81
  5. Step 5: Solve for x
    x = 2,342,015,833.81/73,759.19
  6. Step 6: Final answer
    x = 31,752.19

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1.5x scale

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.