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Finding the Fourth Proportional to 664,357.20, 996,535.80 and 613,035.60

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Solution

The fourth proportional to 664,357.20, 996,535.80 and 613,035.60 is: 919,553.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,357.20 : 996,535.80 = 613,035.60 : x
  2. Step 2: Convert to fraction form
    664,357.20/996,535.80 = 613,035.60/x
  3. Step 3: Cross multiply
    664,357.20x = 996,535.80 × 613,035.60
  4. Step 4: Simplify right side
    664,357.20x = 610,911,922,074.48
  5. Step 5: Solve for x
    x = 610,911,922,074.48/664,357.20
  6. Step 6: Final answer
    x = 919,553.40

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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.