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Finding the Fourth Proportional to 120,069.14, 165,695.92 and 65,622.41

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Solution

The fourth proportional to 120,069.14, 165,695.92 and 65,622.41 is: 90,559.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,069.14 : 165,695.92 = 65,622.41 : x
  2. Step 2: Convert to fraction form
    120,069.14/165,695.92 = 65,622.41/x
  3. Step 3: Cross multiply
    120,069.14x = 165,695.92 × 65,622.41
  4. Step 4: Simplify right side
    120,069.14x = 10,873,365,597.57
  5. Step 5: Solve for x
    x = 10,873,365,597.57/120,069.14
  6. Step 6: Final answer
    x = 90,559.20

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1.5x scale

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.