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Finding the Fourth Proportional to 67,057.20, 100,599.30 and 19,672.20

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Solution

The fourth proportional to 67,057.20, 100,599.30 and 19,672.20 is: 29,512.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,057.20 : 100,599.30 = 19,672.20 : x
  2. Step 2: Convert to fraction form
    67,057.20/100,599.30 = 19,672.20/x
  3. Step 3: Cross multiply
    67,057.20x = 100,599.30 × 19,672.20
  4. Step 4: Simplify right side
    67,057.20x = 1,979,009,549.46
  5. Step 5: Solve for x
    x = 1,979,009,549.46/67,057.20
  6. Step 6: Final answer
    x = 29,512.26

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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.