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Finding the Fourth Proportional to 104,561.89, 156,754.65 and 45,352.98

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Solution

The fourth proportional to 104,561.89, 156,754.65 and 45,352.98 is: 67,991.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,561.89 : 156,754.65 = 45,352.98 : x
  2. Step 2: Convert to fraction form
    104,561.89/156,754.65 = 45,352.98/x
  3. Step 3: Cross multiply
    104,561.89x = 156,754.65 × 45,352.98
  4. Step 4: Simplify right side
    104,561.89x = 7,109,290,506.36
  5. Step 5: Solve for x
    x = 7,109,290,506.36/104,561.89
  6. Step 6: Final answer
    x = 67,991.22

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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.