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Finding the Fourth Proportional to 195,336.80, 293,005.20 and 128,808.80

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Solution

The fourth proportional to 195,336.80, 293,005.20 and 128,808.80 is: 193,213.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    195,336.80 : 293,005.20 = 128,808.80 : x
  2. Step 2: Convert to fraction form
    195,336.80/293,005.20 = 128,808.80/x
  3. Step 3: Cross multiply
    195,336.80x = 293,005.20 × 128,808.80
  4. Step 4: Simplify right side
    195,336.80x = 37,741,648,205.76
  5. Step 5: Solve for x
    x = 37,741,648,205.76/195,336.80
  6. Step 6: Final answer
    x = 193,213.20

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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.