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Finding the Fourth Proportional to 335,722.80, 503,584.20 and 319,393.20

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Solution

The fourth proportional to 335,722.80, 503,584.20 and 319,393.20 is: 479,089.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    335,722.80 : 503,584.20 = 319,393.20 : x
  2. Step 2: Convert to fraction form
    335,722.80/503,584.20 = 319,393.20/x
  3. Step 3: Cross multiply
    335,722.80x = 503,584.20 × 319,393.20
  4. Step 4: Simplify right side
    335,722.80x = 160,841,369,107.44
  5. Step 5: Solve for x
    x = 160,841,369,107.44/335,722.80
  6. Step 6: Final answer
    x = 479,089.80

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Similar ratio
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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.