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Finding the Fourth Proportional to 629,856,559.60, 944,784,839.40 and 220,765,087.60

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Solution

The fourth proportional to 629,856,559.60, 944,784,839.40 and 220,765,087.60 is: 331,147,631.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,856,559.60 : 944,784,839.40 = 220,765,087.60 : x
  2. Step 2: Convert to fraction form
    629,856,559.60/944,784,839.40 = 220,765,087.60/x
  3. Step 3: Cross multiply
    629,856,559.60x = 944,784,839.40 × 220,765,087.60
  4. Step 4: Simplify right side
    629,856,559.60x = 208,575,507,833,292,928
  5. Step 5: Solve for x
    x = 208,575,507,833,292,928/629,856,559.60
  6. Step 6: Final answer
    x = 331,147,631.40

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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.