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Finding the Fourth Proportional to 68,762.86, 103,145.73 and 22,015.60

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Solution

The fourth proportional to 68,762.86, 103,145.73 and 22,015.60 is: 33,023.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,762.86 : 103,145.73 = 22,015.60 : x
  2. Step 2: Convert to fraction form
    68,762.86/103,145.73 = 22,015.60/x
  3. Step 3: Cross multiply
    68,762.86x = 103,145.73 × 22,015.60
  4. Step 4: Simplify right side
    68,762.86x = 2,270,815,133.39
  5. Step 5: Solve for x
    x = 2,270,815,133.39/68,762.86
  6. Step 6: Final answer
    x = 33,023.86

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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.