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Finding the Fourth Proportional to 123,806.60, 170,853.58 and 67,217.96

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Solution

The fourth proportional to 123,806.60, 170,853.58 and 67,217.96 is: 92,761.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,806.60 : 170,853.58 = 67,217.96 : x
  2. Step 2: Convert to fraction form
    123,806.60/170,853.58 = 67,217.96/x
  3. Step 3: Cross multiply
    123,806.60x = 170,853.58 × 67,217.96
  4. Step 4: Simplify right side
    123,806.60x = 11,484,429,106.30
  5. Step 5: Solve for x
    x = 11,484,429,106.30/123,806.60
  6. Step 6: Final answer
    x = 92,761.04

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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.