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Finding the Fourth Proportional to 132,216.40, 198,616.20 and 127,259.20

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Solution

The fourth proportional to 132,216.40, 198,616.20 and 127,259.20 is: 191,169.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,216.40 : 198,616.20 = 127,259.20 : x
  2. Step 2: Convert to fraction form
    132,216.40/198,616.20 = 127,259.20/x
  3. Step 3: Cross multiply
    132,216.40x = 198,616.20 × 127,259.20
  4. Step 4: Simplify right side
    132,216.40x = 25,275,738,719.04
  5. Step 5: Solve for x
    x = 25,275,738,719.04/132,216.40
  6. Step 6: Final answer
    x = 191,169.47

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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.