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Finding the Fourth Proportional to 120,563.67, 180,855.34 and 60,561.28

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Solution

The fourth proportional to 120,563.67, 180,855.34 and 60,561.28 is: 90,846.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,563.67 : 180,855.34 = 60,561.28 : x
  2. Step 2: Convert to fraction form
    120,563.67/180,855.34 = 60,561.28/x
  3. Step 3: Cross multiply
    120,563.67x = 180,855.34 × 60,561.28
  4. Step 4: Simplify right side
    120,563.67x = 10,952,830,885.24
  5. Step 5: Solve for x
    x = 10,952,830,885.24/120,563.67
  6. Step 6: Final answer
    x = 90,846.86

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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.