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Finding the Fourth Proportional to 119,655.28, 165,133.92 and 65,951.20

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Solution

The fourth proportional to 119,655.28, 165,133.92 and 65,951.20 is: 91,017.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,655.28 : 165,133.92 = 65,951.20 : x
  2. Step 2: Convert to fraction form
    119,655.28/165,133.92 = 65,951.20/x
  3. Step 3: Cross multiply
    119,655.28x = 165,133.92 × 65,951.20
  4. Step 4: Simplify right side
    119,655.28x = 10,890,780,184.70
  5. Step 5: Solve for x
    x = 10,890,780,184.70/119,655.28
  6. Step 6: Final answer
    x = 91,017.97

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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.