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Finding the Fourth Proportional to 629,858,982.80, 944,788,474.20 and 354,359,968.40

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Solution

The fourth proportional to 629,858,982.80, 944,788,474.20 and 354,359,968.40 is: 531,539,952.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,858,982.80 : 944,788,474.20 = 354,359,968.40 : x
  2. Step 2: Convert to fraction form
    629,858,982.80/944,788,474.20 = 354,359,968.40/x
  3. Step 3: Cross multiply
    629,858,982.80x = 944,788,474.20 × 354,359,968.40
  4. Step 4: Simplify right side
    629,858,982.80x = 334,795,213,862,196,224
  5. Step 5: Solve for x
    x = 334,795,213,862,196,224/629,858,982.80
  6. Step 6: Final answer
    x = 531,539,952.60

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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.