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Finding the Fourth Proportional to 67,104.80, 100,657.44 and 20,358.08

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Solution

The fourth proportional to 67,104.80, 100,657.44 and 20,358.08 is: 30,537.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,104.80 : 100,657.44 = 20,358.08 : x
  2. Step 2: Convert to fraction form
    67,104.80/100,657.44 = 20,358.08/x
  3. Step 3: Cross multiply
    67,104.80x = 100,657.44 × 20,358.08
  4. Step 4: Simplify right side
    67,104.80x = 2,049,192,216.12
  5. Step 5: Solve for x
    x = 2,049,192,216.12/67,104.80
  6. Step 6: Final answer
    x = 30,537.19

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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.