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Finding the Fourth Proportional to 112,620.30, 168,930.45 and 110,870.70

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Solution

The fourth proportional to 112,620.30, 168,930.45 and 110,870.70 is: 166,306.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,620.30 : 168,930.45 = 110,870.70 : x
  2. Step 2: Convert to fraction form
    112,620.30/168,930.45 = 110,870.70/x
  3. Step 3: Cross multiply
    112,620.30x = 168,930.45 × 110,870.70
  4. Step 4: Simplify right side
    112,620.30x = 18,729,437,242.82
  5. Step 5: Solve for x
    x = 18,729,437,242.82/112,620.30
  6. Step 6: Final answer
    x = 166,306.05

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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.