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Finding the Fourth Proportional to 67,069.08, 100,619.18 and 19,682.25

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Solution

The fourth proportional to 67,069.08, 100,619.18 and 19,682.25 is: 29,527.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,069.08 : 100,619.18 = 19,682.25 : x
  2. Step 2: Convert to fraction form
    67,069.08/100,619.18 = 19,682.25/x
  3. Step 3: Cross multiply
    67,069.08x = 100,619.18 × 19,682.25
  4. Step 4: Simplify right side
    67,069.08x = 1,980,411,757.14
  5. Step 5: Solve for x
    x = 1,980,411,757.14/67,069.08
  6. Step 6: Final answer
    x = 29,527.94

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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.