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Finding the Fourth Proportional to 590,612.80, 885,919.20 and 472,514.80

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Solution

The fourth proportional to 590,612.80, 885,919.20 and 472,514.80 is: 708,772.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    590,612.80 : 885,919.20 = 472,514.80 : x
  2. Step 2: Convert to fraction form
    590,612.80/885,919.20 = 472,514.80/x
  3. Step 3: Cross multiply
    590,612.80x = 885,919.20 × 472,514.80
  4. Step 4: Simplify right side
    590,612.80x = 418,609,933,604.16
  5. Step 5: Solve for x
    x = 418,609,933,604.16/590,612.80
  6. Step 6: Final answer
    x = 708,772.20

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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.