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Finding the Fourth Proportional to 171,976.80, 256,807.14 and 140,449.44

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Solution

The fourth proportional to 171,976.80, 256,807.14 and 140,449.44 is: 209,728.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,976.80 : 256,807.14 = 140,449.44 : x
  2. Step 2: Convert to fraction form
    171,976.80/256,807.14 = 140,449.44/x
  3. Step 3: Cross multiply
    171,976.80x = 256,807.14 × 140,449.44
  4. Step 4: Simplify right side
    171,976.80x = 36,068,419,001.00
  5. Step 5: Solve for x
    x = 36,068,419,001.00/171,976.80
  6. Step 6: Final answer
    x = 209,728.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.