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Finding the Fourth Proportional to 251,600.40, 377,449.20 and 74,113.20

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Solution

The fourth proportional to 251,600.40, 377,449.20 and 74,113.20 is: 111,184.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    251,600.40 : 377,449.20 = 74,113.20 : x
  2. Step 2: Convert to fraction form
    251,600.40/377,449.20 = 74,113.20/x
  3. Step 3: Cross multiply
    251,600.40x = 377,449.20 × 74,113.20
  4. Step 4: Simplify right side
    251,600.40x = 27,973,968,049.44
  5. Step 5: Solve for x
    x = 27,973,968,049.44/251,600.40
  6. Step 6: Final answer
    x = 111,184.12

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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.