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Finding the Fourth Proportional to 119,620.80, 165,077.19 and 65,903.22

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Solution

The fourth proportional to 119,620.80, 165,077.19 and 65,903.22 is: 90,946.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,620.80 : 165,077.19 = 65,903.22 : x
  2. Step 2: Convert to fraction form
    119,620.80/165,077.19 = 65,903.22/x
  3. Step 3: Cross multiply
    119,620.80x = 165,077.19 × 65,903.22
  4. Step 4: Simplify right side
    119,620.80x = 10,879,118,369.55
  5. Step 5: Solve for x
    x = 10,879,118,369.55/119,620.80
  6. Step 6: Final answer
    x = 90,946.71

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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.