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Finding the Fourth Proportional to 664,359.20, 996,538.80 and 613,037.60

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Solution

The fourth proportional to 664,359.20, 996,538.80 and 613,037.60 is: 919,556.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,359.20 : 996,538.80 = 613,037.60 : x
  2. Step 2: Convert to fraction form
    664,359.20/996,538.80 = 613,037.60/x
  3. Step 3: Cross multiply
    664,359.20x = 996,538.80 × 613,037.60
  4. Step 4: Simplify right side
    664,359.20x = 610,915,754,258.88
  5. Step 5: Solve for x
    x = 610,915,754,258.88/664,359.20
  6. Step 6: Final answer
    x = 919,556.40

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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.