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Finding the Fourth Proportional to 119,695.62, 165,172.46 and 65,981.10

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Solution

The fourth proportional to 119,695.62, 165,172.46 and 65,981.10 is: 91,049.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,695.62 : 165,172.46 = 65,981.10 : x
  2. Step 2: Convert to fraction form
    119,695.62/165,172.46 = 65,981.10/x
  3. Step 3: Cross multiply
    119,695.62x = 165,172.46 × 65,981.10
  4. Step 4: Simplify right side
    119,695.62x = 10,898,260,270.60
  5. Step 5: Solve for x
    x = 10,898,260,270.60/119,695.62
  6. Step 6: Final answer
    x = 91,049.78

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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.