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Finding the Fourth Proportional to 639,821,729.80, 959,732,594.70 and 589,433,249.80

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Solution

The fourth proportional to 639,821,729.80, 959,732,594.70 and 589,433,249.80 is: 884,149,874.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,821,729.80 : 959,732,594.70 = 589,433,249.80 : x
  2. Step 2: Convert to fraction form
    639,821,729.80/959,732,594.70 = 589,433,249.80/x
  3. Step 3: Cross multiply
    639,821,729.80x = 959,732,594.70 × 589,433,249.80
  4. Step 4: Simplify right side
    639,821,729.80x = 565,698,302,233,007,232
  5. Step 5: Solve for x
    x = 565,698,302,233,007,232/639,821,729.80
  6. Step 6: Final answer
    x = 884,149,874.70

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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.