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Finding the Fourth Proportional to 205,828.80, 308,305.80 and 170,836.80

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Solution

The fourth proportional to 205,828.80, 308,305.80 and 170,836.80 is: 255,892.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    205,828.80 : 308,305.80 = 170,836.80 : x
  2. Step 2: Convert to fraction form
    205,828.80/308,305.80 = 170,836.80/x
  3. Step 3: Cross multiply
    205,828.80x = 308,305.80 × 170,836.80
  4. Step 4: Simplify right side
    205,828.80x = 52,669,976,293.44
  5. Step 5: Solve for x
    x = 52,669,976,293.44/205,828.80
  6. Step 6: Final answer
    x = 255,892.16

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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.