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Finding the Fourth Proportional to 664,235.60, 996,353.40 and 609,123.20

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Solution

The fourth proportional to 664,235.60, 996,353.40 and 609,123.20 is: 913,684.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,235.60 : 996,353.40 = 609,123.20 : x
  2. Step 2: Convert to fraction form
    664,235.60/996,353.40 = 609,123.20/x
  3. Step 3: Cross multiply
    664,235.60x = 996,353.40 × 609,123.20
  4. Step 4: Simplify right side
    664,235.60x = 606,901,971,338.88
  5. Step 5: Solve for x
    x = 606,901,971,338.88/664,235.60
  6. Step 6: Final answer
    x = 913,684.80

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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.