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Finding the Fourth Proportional to 173,620.80, 260,431.20 and 80,075.52

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Solution

The fourth proportional to 173,620.80, 260,431.20 and 80,075.52 is: 120,113.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,620.80 : 260,431.20 = 80,075.52 : x
  2. Step 2: Convert to fraction form
    173,620.80/260,431.20 = 80,075.52/x
  3. Step 3: Cross multiply
    173,620.80x = 260,431.20 × 80,075.52
  4. Step 4: Simplify right side
    173,620.80x = 20,854,163,764.22
  5. Step 5: Solve for x
    x = 20,854,163,764.22/173,620.80
  6. Step 6: Final answer
    x = 120,113.28

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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.