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Finding the Fourth Proportional to 603,903.60, 905,855.40 and 393,951.60

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Solution

The fourth proportional to 603,903.60, 905,855.40 and 393,951.60 is: 590,927.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    603,903.60 : 905,855.40 = 393,951.60 : x
  2. Step 2: Convert to fraction form
    603,903.60/905,855.40 = 393,951.60/x
  3. Step 3: Cross multiply
    603,903.60x = 905,855.40 × 393,951.60
  4. Step 4: Simplify right side
    603,903.60x = 356,863,184,198.64
  5. Step 5: Solve for x
    x = 356,863,184,198.64/603,903.60
  6. Step 6: Final answer
    x = 590,927.40

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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.