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Finding the Fourth Proportional to 73,785.88, 110,683.18 and 21,194.20

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Solution

The fourth proportional to 73,785.88, 110,683.18 and 21,194.20 is: 31,792.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,785.88 : 110,683.18 = 21,194.20 : x
  2. Step 2: Convert to fraction form
    73,785.88/110,683.18 = 21,194.20/x
  3. Step 3: Cross multiply
    73,785.88x = 110,683.18 × 21,194.20
  4. Step 4: Simplify right side
    73,785.88x = 2,345,841,453.56
  5. Step 5: Solve for x
    x = 2,345,841,453.56/73,785.88
  6. Step 6: Final answer
    x = 31,792.55

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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.