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Finding the Fourth Proportional to 629,857,998.90, 944,786,998.35 and 384,969,986.10

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Solution

The fourth proportional to 629,857,998.90, 944,786,998.35 and 384,969,986.10 is: 577,454,979.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    629,857,998.90 : 944,786,998.35 = 384,969,986.10 : x
  2. Step 2: Convert to fraction form
    629,857,998.90/944,786,998.35 = 384,969,986.10/x
  3. Step 3: Cross multiply
    629,857,998.90x = 944,786,998.35 × 384,969,986.10
  4. Step 4: Simplify right side
    629,857,998.90x = 363,714,637,622,260,224
  5. Step 5: Solve for x
    x = 363,714,637,622,260,224/629,857,998.90
  6. Step 6: Final answer
    x = 577,454,979.15

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Double scale
Find fourth proportional to 629,857,999.90, 944,786,999.85 and 384,969,987.10
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.