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Finding the Fourth Proportional to 664,650.80, 996,976.20 and 384,714.80

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Solution

The fourth proportional to 664,650.80, 996,976.20 and 384,714.80 is: 577,072.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,650.80 : 996,976.20 = 384,714.80 : x
  2. Step 2: Convert to fraction form
    664,650.80/996,976.20 = 384,714.80/x
  3. Step 3: Cross multiply
    664,650.80x = 996,976.20 × 384,714.80
  4. Step 4: Simplify right side
    664,650.80x = 383,551,499,387.76
  5. Step 5: Solve for x
    x = 383,551,499,387.76/664,650.80
  6. Step 6: Final answer
    x = 577,072.20

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Half scale
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Double scale
Find fourth proportional to 664,651.80, 996,977.70 and 384,715.80
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.