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Finding the Fourth Proportional to 119,705.55, 165,208.61 and 68,734.24

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Solution

The fourth proportional to 119,705.55, 165,208.61 and 68,734.24 is: 94,861.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,705.55 : 165,208.61 = 68,734.24 : x
  2. Step 2: Convert to fraction form
    119,705.55/165,208.61 = 68,734.24/x
  3. Step 3: Cross multiply
    119,705.55x = 165,208.61 × 68,734.24
  4. Step 4: Simplify right side
    119,705.55x = 11,355,488,008.62
  5. Step 5: Solve for x
    x = 11,355,488,008.62/119,705.55
  6. Step 6: Final answer
    x = 94,861.84

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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.