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Finding the Fourth Proportional to 66,753.86, 100,145.78 and 22,379.48

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Solution

The fourth proportional to 66,753.86, 100,145.78 and 22,379.48 is: 33,574.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,753.86 : 100,145.78 = 22,379.48 : x
  2. Step 2: Convert to fraction form
    66,753.86/100,145.78 = 22,379.48/x
  3. Step 3: Cross multiply
    66,753.86x = 100,145.78 × 22,379.48
  4. Step 4: Simplify right side
    66,753.86x = 2,241,210,480.59
  5. Step 5: Solve for x
    x = 2,241,210,480.59/66,753.86
  6. Step 6: Final answer
    x = 33,574.25

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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.