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Finding the Fourth Proportional to 664,342.40, 996,513.60 and 619,727.60

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Solution

The fourth proportional to 664,342.40, 996,513.60 and 619,727.60 is: 929,591.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,342.40 : 996,513.60 = 619,727.60 : x
  2. Step 2: Convert to fraction form
    664,342.40/996,513.60 = 619,727.60/x
  3. Step 3: Cross multiply
    664,342.40x = 996,513.60 × 619,727.60
  4. Step 4: Simplify right side
    664,342.40x = 617,566,981,695.36
  5. Step 5: Solve for x
    x = 617,566,981,695.36/664,342.40
  6. Step 6: Final answer
    x = 929,591.40

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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.