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Finding the Fourth Proportional to 104,561.80, 156,754.53 and 45,352.88

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Solution

The fourth proportional to 104,561.80, 156,754.53 and 45,352.88 is: 67,991.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,561.80 : 156,754.53 = 45,352.88 : x
  2. Step 2: Convert to fraction form
    104,561.80/156,754.53 = 45,352.88/x
  3. Step 3: Cross multiply
    104,561.80x = 156,754.53 × 45,352.88
  4. Step 4: Simplify right side
    104,561.80x = 7,109,269,388.55
  5. Step 5: Solve for x
    x = 7,109,269,388.55/104,561.80
  6. Step 6: Final answer
    x = 67,991.08

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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.