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Finding the Fourth Proportional to 67,221.30, 100,782.48 and 22,836.12

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Solution

The fourth proportional to 67,221.30, 100,782.48 and 22,836.12 is: 34,237.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,221.30 : 100,782.48 = 22,836.12 : x
  2. Step 2: Convert to fraction form
    67,221.30/100,782.48 = 22,836.12/x
  3. Step 3: Cross multiply
    67,221.30x = 100,782.48 × 22,836.12
  4. Step 4: Simplify right side
    67,221.30x = 2,301,480,807.18
  5. Step 5: Solve for x
    x = 2,301,480,807.18/67,221.30
  6. Step 6: Final answer
    x = 34,237.37

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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.