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Finding the Fourth Proportional to 664,314.60, 996,471.90 and 451,738.20

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Solution

The fourth proportional to 664,314.60, 996,471.90 and 451,738.20 is: 677,607.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,314.60 : 996,471.90 = 451,738.20 : x
  2. Step 2: Convert to fraction form
    664,314.60/996,471.90 = 451,738.20/x
  3. Step 3: Cross multiply
    664,314.60x = 996,471.90 × 451,738.20
  4. Step 4: Simplify right side
    664,314.60x = 450,144,422,456.58
  5. Step 5: Solve for x
    x = 450,144,422,456.58/664,314.60
  6. Step 6: Final answer
    x = 677,607.30

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Half scale
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Double scale
Find fourth proportional to 664,315.60, 996,473.40 and 451,739.20
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.