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Finding the Fourth Proportional to 572,594.20, 858,891.30 and 320,651.80

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Solution

The fourth proportional to 572,594.20, 858,891.30 and 320,651.80 is: 480,977.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,594.20 : 858,891.30 = 320,651.80 : x
  2. Step 2: Convert to fraction form
    572,594.20/858,891.30 = 320,651.80/x
  3. Step 3: Cross multiply
    572,594.20x = 858,891.30 × 320,651.80
  4. Step 4: Simplify right side
    572,594.20x = 275,405,041,349.34
  5. Step 5: Solve for x
    x = 275,405,041,349.34/572,594.20
  6. Step 6: Final answer
    x = 480,977.70

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Double scale
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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.