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Finding the Fourth Proportional to 267,611.12, 369,300.30 and 154,431.44

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Solution

The fourth proportional to 267,611.12, 369,300.30 and 154,431.44 is: 213,113.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    267,611.12 : 369,300.30 = 154,431.44 : x
  2. Step 2: Convert to fraction form
    267,611.12/369,300.30 = 154,431.44/x
  3. Step 3: Cross multiply
    267,611.12x = 369,300.30 × 154,431.44
  4. Step 4: Simplify right side
    267,611.12x = 57,031,577,121.43
  5. Step 5: Solve for x
    x = 57,031,577,121.43/267,611.12
  6. Step 6: Final answer
    x = 213,113.63

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.