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Finding the Fourth Proportional to 664,405.60, 996,608.40 and 617,166.40

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Solution

The fourth proportional to 664,405.60, 996,608.40 and 617,166.40 is: 925,749.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,405.60 : 996,608.40 = 617,166.40 : x
  2. Step 2: Convert to fraction form
    664,405.60/996,608.40 = 617,166.40/x
  3. Step 3: Cross multiply
    664,405.60x = 996,608.40 × 617,166.40
  4. Step 4: Simplify right side
    664,405.60x = 615,073,218,437.76
  5. Step 5: Solve for x
    x = 615,073,218,437.76/664,405.60
  6. Step 6: Final answer
    x = 925,749.60

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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.