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Finding the Fourth Proportional to 67,229.44, 100,820.64 and 19,831.96

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Solution

The fourth proportional to 67,229.44, 100,820.64 and 19,831.96 is: 29,741.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,229.44 : 100,820.64 = 19,831.96 : x
  2. Step 2: Convert to fraction form
    67,229.44/100,820.64 = 19,831.96/x
  3. Step 3: Cross multiply
    67,229.44x = 100,820.64 × 19,831.96
  4. Step 4: Simplify right side
    67,229.44x = 1,999,470,899.65
  5. Step 5: Solve for x
    x = 1,999,470,899.65/67,229.44
  6. Step 6: Final answer
    x = 29,741.00

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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.