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Finding the Fourth Proportional to 132,328.40, 198,550.20 and 66,664.40

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Solution

The fourth proportional to 132,328.40, 198,550.20 and 66,664.40 is: 100,025.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,328.40 : 198,550.20 = 66,664.40 : x
  2. Step 2: Convert to fraction form
    132,328.40/198,550.20 = 66,664.40/x
  3. Step 3: Cross multiply
    132,328.40x = 198,550.20 × 66,664.40
  4. Step 4: Simplify right side
    132,328.40x = 13,236,229,952.88
  5. Step 5: Solve for x
    x = 13,236,229,952.88/132,328.40
  6. Step 6: Final answer
    x = 100,025.62

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.