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Finding the Fourth Proportional to 112,213.44, 154,855.08 and 61,912.44

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Solution

The fourth proportional to 112,213.44, 154,855.08 and 61,912.44 is: 85,439.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,213.44 : 154,855.08 = 61,912.44 : x
  2. Step 2: Convert to fraction form
    112,213.44/154,855.08 = 61,912.44/x
  3. Step 3: Cross multiply
    112,213.44x = 154,855.08 × 61,912.44
  4. Step 4: Simplify right side
    112,213.44x = 9,587,455,849.20
  5. Step 5: Solve for x
    x = 9,587,455,849.20/112,213.44
  6. Step 6: Final answer
    x = 85,439.46

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1.5x scale

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.