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Finding the Fourth Proportional to 112,611.11, 168,935.12 and 53,414.49

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Solution

The fourth proportional to 112,611.11, 168,935.12 and 53,414.49 is: 80,130.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,611.11 : 168,935.12 = 53,414.49 : x
  2. Step 2: Convert to fraction form
    112,611.11/168,935.12 = 53,414.49/x
  3. Step 3: Cross multiply
    112,611.11x = 168,935.12 × 53,414.49
  4. Step 4: Simplify right side
    112,611.11x = 9,023,582,894.37
  5. Step 5: Solve for x
    x = 9,023,582,894.37/112,611.11
  6. Step 6: Final answer
    x = 80,130.48

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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.