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Finding the Fourth Proportional to 136,628.80, 204,943.20 and 96,539.20

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Solution

The fourth proportional to 136,628.80, 204,943.20 and 96,539.20 is: 144,808.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,628.80 : 204,943.20 = 96,539.20 : x
  2. Step 2: Convert to fraction form
    136,628.80/204,943.20 = 96,539.20/x
  3. Step 3: Cross multiply
    136,628.80x = 204,943.20 × 96,539.20
  4. Step 4: Simplify right side
    136,628.80x = 19,785,052,573.44
  5. Step 5: Solve for x
    x = 19,785,052,573.44/136,628.80
  6. Step 6: Final answer
    x = 144,808.80

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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.