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Finding the Fourth Proportional to 511,245.60, 705,559.54 and 281,843.65

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Solution

The fourth proportional to 511,245.60, 705,559.54 and 281,843.65 is: 388,966.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    511,245.60 : 705,559.54 = 281,843.65 : x
  2. Step 2: Convert to fraction form
    511,245.60/705,559.54 = 281,843.65/x
  3. Step 3: Cross multiply
    511,245.60x = 705,559.54 × 281,843.65
  4. Step 4: Simplify right side
    511,245.60x = 198,857,475,959.03
  5. Step 5: Solve for x
    x = 198,857,475,959.03/511,245.60
  6. Step 6: Final answer
    x = 388,966.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.